On finishing a game, you can pick one challenge to make the next run harder, but giving you extra reputation on finishing the palaces. Each challenge gives a bonus for finishing a certain palace, so to get all reputation you need to complete all palaces. Each bonus can only be received once. After building all palaces the challenge is marked as finished and the used difficulty level is saved for it, so you can beat your own record in the future.
While for the normal bonus the difficulty level isn't important, if you play the ironman mode by choosing no custodians, you can get even more reputation depending on the chosen difficulty level. If you finish an ironman game on a higher difficulty level after beating it with a lower one, you only get the difference, so beating is on very hard will give you all bonuses in one run.
| Name | 
|
|
Description | Ironman | |||
|---|---|---|---|---|---|---|---|
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| Relaxed Challenges | |||||||
| Mobilization | 1 
|
- | After every battle, 10% of the surviving units quit. In return, the base garrison size is doubled. |
- | - | - | 1
|
| Northern Wasteland | 1
|
- | No trees can grow on the northern islands. In return, all forests in all regions always have 3 trees. |
- | - | - | 1
|
| Ship Certificates | 1
|
- | Your ships cost more coins the more you have of that type. In return, they cost no coins initially. |
- | - | - | 1
|
| Tricky Challenges | |||||||
| Bulk Cargo | 1
|
1
|
Your ships have only one cargo hold. In return, it is as large as all of them combined. |
- | - | 1
|
2
|
| Tiny Houses | 1
|
1
|
Your houses can only accommodate 5 inhabitants. In return, you gain creativity twice as fast. |
- | - | 1
|
2
|
| Unlucky Fellow | 1
|
1
|
Your starting islands in all regions are size 12 and lack both mountains and rivers. In return, you start with 3 cogs and the garrison filled with footsoldiers and archers. |
- | - | 1
|
2
|
| Tough Challenges | |||||||
| Massive Construction | 2
|
1
|
All building material costs are quadrupled. In return, the costs in coins are only a quarter. |
- | 1
|
2
|
3
|
| Pacifist | 2
|
1
|
You cannot attack enemy camps. In return, you start with the research Bribery, 2,000 coins, and bribes have no limit. |
- | 1
|
2
|
3
|
| Reinforcements | 2
|
1
|
Each attack on an enemy camp increases the size of all other camps on that island, not currently under attack, by 3 units per present unit type. In return, all units require only half of militias or slingers for training (min. 1). |
- | 1
|
2
|
3
|
| Impossible Challenges | |||||||
| Archipelago | 2
|
2
|
You can only discover islands of size 12. In return, you start with 200 extra island slots. |
1
|
2
|
3
|
4
|
| Independence | 2
|
2
|
You cannot hand over islands to the Paragons. In return, you start with 10 extra island slots. WARNING: This challenge is only feasible with careful planning and can otherwise lead to being stuck and having to restart the round. |
1
|
2
|
3
|
4
|
| War Weariness | 2
|
2
|
After every battle, all of the used units quit. In return, your troops don't count towards the battle duration. |
1
|
2
|
3
|
4
|