Production Heroes Guide – Last Fortress: Underground​

Solari heroes are heroes you use in your facilities (Mines, Farms, Mints, etc.). They are also called production heroes as they produce various resources for you.

This guide goes over all production heroes in the game. I will discuss their every skill, explaining which are better to prioritize first and which are not that important. I will also go over evolving and leveling up the heroes – whether it is worth it.

General Heroes Guide – read this guide if you want to know more about the heroes of Last Fortress in general (types, ways to get, upgrading, etc.).

Gear on Solari Heroes – here, you can learn how to use gear on production heroes and why you would want to do that.

Currently, there are 32 Solari heroes in the game, with one not obtainable anymore (Lambert).

Production Hero Types

Rarity

Similarly to combat heroes, production heroes are of different rarity:

• Uncommon (green)
• Rare (blue)
• Elite (purple)
• Advanced Elite (purple 5-skill)

You will obtain all uncommon and rare heroes in the game gradually by completing the campaign missions on the map. These are easier to evolve and upgrade skills as you will get them in Production Hero Cards, and medals for them are far more common. 

As for others, most of them you can only buy (see how). The only exception is Wolowitz, who you get by completing the Warpath event at the very start of the game.

After you get every uncommon and rare hero, some elite heroes will “visit” your base, so you can test them and see how good they are. I remember there was this bug where each time you traveled to another server, these temporary Solari heroes would come again to your base, but I don’t know if it is still the case.

As for which heroes are worth buying, I would say that these were N.A.T.E. and Pearson.

As for NATE, I have a small article explaining why it is worth buying so you can check it out. And Pearson allows you to have more than one Work Station hero working on one construction, shortening the required construction time by the number of the heroes assigned. For example, if your build takes 30 days to be completed, you will shorten that to only five days by assigning six heroes to it.

Role

Besides rarity, you can classify production heroes by their roles. However, you can assign any hero to any facility, but the hero will be the most effective only in their “native” facility.

Usually, you can easily tell what the hero’s role is by looking at their first skill. It usually says something like, “Effective when working at [FACILITY].” If [FACILITY] is Work Station, for example, it means the first skill takes effect only when that hero is assigned to a Work Station.

You can point out the following roles:

• Builders – heroes that improve construction speed when assigned to Work Stations.
• Farmers – heroes that improve the amount of food your farms produce.
• Miners – heroes that improve the output of your mines.
• Trainers – heroes that improve the troops’ training speed.
• Specialists – all other heroes for single facilities.

Note: There can be two heroes for one facility. For example, Emma is a cook, and so is Tikka. If, for instance, you upgrade Emma first, get her first skill maxed out but then get Tikka, you can use Emma in a Mint or a Mine (depending on what you need more at that moment). But remember to adjust the gear correspondingly.

Skill priority

Maxing one skill to level five right away is not always wise since 120 medals is one upgrade from level four to level five, whereas 135 medals is three upgrades from level three to level four. Steps will usually bring you the same amount of improvement, so it is generally better to get the priority skills to level four and only then start maxing them to five.

The different levels of priority that I will use will imply the following:

• Priority 0: Max out first.
• Priority 1: Upgrade these skills to level four first. Upgrade to level five after Priority 2 skills are at level three.
• Priority 2: Upgrade to level three after Priority 1 skills are at level four. Upgrade to level four after Priority 1 skills are at level five. Max out after Priority 3 skills are at level three.
• Priority 3: Upgrade last.

After each priority, I will list heroes and their skill numbers for conciseness.

But in short, everything that buffs m-coins comes first because it will allow you to progress with your heroes faster. Then comes construction speed buffs because the higher you get in terms of base level, the longer it will take to upgrade stuff. After that comes production buffs and buffs to heroes, as those will matter more later once your production numbers and heroes’ attributes are bigger numerically. 

I will assume that you have NATE and will put worker distribution and speed skills at the bottom of priority. But, if you don’t have it, upgrade them when you see that delivering resources within your base takes too long.

Next, let’s look at each rarity separately and determine the priority of skills within that rarity.

Uncommon Production Heroes

There are seven uncommon production heroes in the game:

1. Bonnie
2. Brady
3. Emma
4. Fernando
5. Harrison
6. Lafite Marceau
7. Mario

Three of them you will have available right away: Fernando, Brady, and Emma.

Skill Priority 

• Priority 0: Emma 3, Harrison 4
• Priority 1: Brady 2, Bonnie 3, Harrison 2
• Priority 2: Emma 1, Brady 4, Mario 2, Lafite Marceau 1, Lafite Marceau 4, Bonnie 1, Bonnie 4, Harrison 1
• Priority 3: Everything else

Here are their skills:

Rare Production Heroes

There are five uncommon production heroes in the game:

1. Cara
2. Diana
3. Elena
4. Jack Chang
5. McKinley

Skill Priority

• Priority 0: McKinley 1, McKinley 3
• Priority 1: McKinley 4, Jack Chang 2, Elena 4, Diana 2
• Priority 2: Jack Chang 3, Cara 1, Elena 1, Diana 1, Diana 3
• Priority 3: Everything Else

Here are their skills:

Elite and Advance Elite Production Heroes

There are ten Elite (4-skill) and nine Advanced Elite (5-skill) heroes in the game.

Elite:

1. Bacchus
2. Beesly
3. Erica
4. Grace
5. Lemuros
6. Lori
7. Maurer
8. McCaul
9. Pamela
10. Pheidias

Advance Elite:

1. Christine
2. Fiona
3. Helen
4. Laura Chen
5. Luke
6. NATE
7. Pearson
8. Tikka
9. Wolowitz
10. Lambert (no longer attainable as of now)

I put these two types under one category because you use elite medals to upgrade the skills of both of them. Below, I will provide a tier list, indicating which heroes are worth getting first and what rarity it is worth getting them to. I will base the skill priority here on these rarities, so there might be good skills that don’t get to Priori 1 or 2 because they are the last ones of the hero and need quite some time and\or money to be unlocked.

Here’s a list of rarities and heroes that I think are worth to be evolved to these rarities or kept at purple for the sake of their skills. 

• Purple: Maurer, Grace, Lemuros, Erica, McCaul, Beesly, Lori, Pamela, Laura Chen, Tikka, Luke, Christine 
• Orange: Pheidias, Bacchus, Fiona, Helen, NATE
• Red: Pearson, Wolowitz
• Golden: In my humble opinion, none of the fifth skills are worth getting to right away. You can consider unlocking them if you have nothing else to unlock.

Russell

Update 1.323.001 brought a new Solari to the game – Russell.

This hero brought two new world map mechanics to the game:

• Fishing (first skill)
• Exploring (second skill)

Fishing allows you to send Russell to a lake with bubbles to sit and fish for a few hours.

• There is regular fish you can catch and rare fish.
• You can then cook that fish in your Diner for dishes that provide minor buffs.
  • Fresh fish soup – +5% gathering speed for 8 hours. Warning! Overrides any other gathering buffs you activated. – Meh.
  • Eel jelly – WPN ATK +2% for 30 minutes. – Good.
  • Steamed fish with scales – TAC ATK +2% for 30 minutes. – Good.
  • Grilled Thornback – Destructive Might +5 for 30 minutes. – Meh.
  • Stargazing Pie – Travel Speed +2% for 30 minutes. – Average.
• Upgrading his first skill increases the amount of fish you catch and reduces the cooldown between the fishing sessions.

Exploring allows you to get Treasure Maps of Ruins and explore them once a day.

• There are five levels of maps.
• Russell can explore the maps that are equal to his second skill level and below.
• You can Merge maps to get a map of a higher level.
  • 5 level 1 maps = 1 level 2 map
  • 4 level 2 maps = 1 level 3 map
  • 4 level 3 maps = 1 level 4 map
  • 3 level 4 maps = 1 level 5 map
• The ruins you explore contain some diamonds and z-coins
• By upgrading his second skill, you allow Russell to explore ruins of higher levels.
  • As of now, there is no point in upgrading this skill past level 4. Level 5 ruins will give you 70-85 diamonds and 1000-1200 z-coins, whereas level 4 ruins will give 50-60 diamonds and 700-800 z-coins. Considering that a) you need 3 level 4s to get a level 5 and b) you are not guaranteed to get or merge a level 5 map, it is better to consistently explore a level 4 ruin, which will yield around 1,500-1,800 diamonds and 21,000-24,000 z-coins monthly.

As for his other skills, only the fourth one – All heroes’ HP +1/2/3/4/5% – is worth considering.

Verdict? If you have all other Solari heroes and spend money regularly, get one copy of him. Otherwise, don’t other.

Skill priority

This skill priority assumes the heroes are at the rarities above, so everything that’s not unlocked is not mentioned here.

Also, maxing out is rarely possible because it is often better to max out your combat heroes first, so there is no priority 0.

• Priority 1: Christine 1, Bacchus 3, Wolowitz 2
• Priority 2: Helen 2, NATE 2, Pearson 3
• Priority 3: Pearson 1, Pearson 2, Pearson 4, Wolowitz 1, Wolowitz 3, Wolowitz 4, Laura Chen 1, Bacchus 1, Fiona 3, Helen 1, Helen 3
• Priority 4: Maurer 1, Pheidias 3, Grace 1, Grace 2, Lemuros 1, Erica 2, Beesly 1, Lori 1, Pamela 1, Tikka 1, Fiona 1, Fiona 2, NATE 3
• Priority 5: Maurer 2, Pheidias 2, Erica 1, McCaul 2, Bacchus 2, Beesly 2, Lori 2, Pamela 2, Laura Chen 2, Tikka 2, Luke 1, Luke 2, NATE 1
• Priority 6: Everything Else

Here are the skills of elite heroes:

And here are the skills of advanced elite ones:

In the next section (Tier List), the ranking I provide and the commentaries might better explain the skill priority I set.

Hero Tier List and Commentaries

• SS Tier: N.A.T.E.
  • If I could get only one hero from all Elite and Advance Elite heroes, I would get N.A.T.E. The need to manually gather resources in your base and micromanage things makes this game much more tedious, so for me, N.A.T.E. is the best Solari hero in Last Fortress. Read more about him here.
• S Tier: Pearson, Wolowitz
  • Pearson – easily the second-best production hero in the game. The ability to use multiple heroes on one construction allows you to finish long timers on those builds much, much faster. 
  • Wolowitz – most of his skills are great, so he gets a spot near Pearson.
• A Tier: Christine, Laura Chen, Helen, Fiona
  • Christine – along with the Bar, allows you to get a decent m-coin boost. The earlier you get this pair, the better.
  • Laura Chen – provides a truck that can be used for gathering. I’ve been keeping her first skill at level four for a while because it allows getting a level four iron mine fully depleted. A nice resource bonus, which also helps get more duel points on Mondays.
  • Helen – I was considering giving her an S tier, but I think she is somewhere in the middle. The ability to auto-produce meds is great, and the treatment speed buff helps use fewer meds. However, her last skill has a huge cooldown and applies only to one attack.
  • Fiona – worth getting once you have T8 troops, as the training time gets much longer at that point. Also, the higher troop cap allows you to get more duel points on Fridays.
• B Tier: Maurer, Grace, Bacchus, Beesly, Lori, Pamela
  • Won’t go about every hero here. These are just mediocre ones. Not very great, but not bad either.
• C Tier: Tikka, Pheidias, Erica, Russell
  • Tikka – as a 5-skill hero, her skills are not that great.
  • Pheidias – his first skill is pathetic. At level five, it shaves off 1800 seconds of construction. That’s only 30 minutes, Carl. The level 28 control center would have taken me three months to build if I didn’t have Pearson and all Work Stations. 30 minutes? Really? 
  • Erica – tf is her third skill? What’s a Breeding Room? If that’s the Dairy Farm (because there’s a picture of a cow on the skill), there’s already Elena with a +30% buff. 
• D Tier: Luke, Lemuros, McCaul
  • Luke – okay, just hear me out. I think there is no need to speed up the research too much. I have always had plenty of speed-ups for research, and they keep piling up (4,000+ hours, middle season four, have not bought speed-ups at all). 
  • Lemuros – one of the heroes I would get last. Only his first and last skills are okay.
  • McCaul – supposed to replace one of the rare heroes in the Work Station. But here’s a thing – you will need to upgrade his second skill to level four in order for McCaul to be more effective than, let’s say, Jack Chang.

Heroes Worth Upgrading and Putting Gear On

By ascending Solari heroes and putting gear on them, you can increase their stats. That, in turn, can affect the production of the facilities these heroes are working at and the skills of some Solaris.

Each hero has a maximum number of each stat they can gain. It is what you will get if you upgrade the hero to level 100 at Myth III rarity. Here’s where you can look that up:

Go to Hero => Portraits => Choose a hero => Max Level => [!] in the upper right corner.

Note: you don’t want to even think about it until your facilities reach level 20, as gains from stats will be insignificant until then.

Here’s how Solari’s stats affect different facilities:

Here are the skills affected by stats:

• Pearson (Skill 4) — Increase Construction Speed by 1% for every 60/55/50/40/30 points of STR.
• Christine (Skill 5) — Get +1/2/3/4/5 Memento Coins for every 40 points of LUK.
• Luke (Skill 4) — Increase Research Speed by a bonus of +1% for every 80/70/60/50/40 points of INT.
• Wolowitz (Skill 4) — For every 60/50/40/30/20 points on INT, the Construction Speed is increased by an additional 1%.

Now let’s see what you can potentially get with these heroes maxed out:

• Pearson’s max STR is 926. With maxed-out epic gear, you can add 96 and 3.2%+7% with the weapon piece and +96 with the jewelry piece. That’s around 1232 STR that you can get to. In this case, a maxed-out fourth skill will result in a +41% construction speed bonus. 
• Christine’s max LUK is 926. With maxed-out epic gear, you can add 50 LUK with the jewelry piece. That’s 976 LUK, which is +122 m-coins per hour, with her fifth skill maxed out.
• Luke’s max INT is 926. The limit is the same as Pearson’s one, so ~1232 INT. That’s +30.8% of Research speed.
• Wolowitz’s max INT is also 926. With the same math, we will get +61.6% in construction speed. 

As you can see, Pearson and Wolowitz are the ones who you should be maxing out first.

For other heroes, in terms of evolving, consider this priority:

• McKinley
• Diana
• Lafite

Maxing builders won’t matter if you have NATE. Mario is also not worth it. Hence, the next in the line would be:

• Trainers
• Mint workers
• Farmers
• Miners

Once again, everything about putting gear on them you can read here – Gearing Up Solari Heroes.

Hope this helps. Take care!