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How do you like the Devils in the first week?
Verified.
I played 7 test games on 160% difficulty with strong monsters.
I managed to get Devils twice! If we add the possibility of restarts, the probability will probably be 50/50.
Starting hero - Octavia, bonus - mercury.
Prerequisites for the strategy: Gogs are built in the city, spawning on the surface, a large respawn area, and one of the heroes in the tavern is an elemental.
Then I immediately buy 2-3 additional heroes, with whom I quickly gather resources. I buy out the Gogs for the main hero and fight only when it is really necessary - for money or mercury. No distractions for scrolls, sanctuaries, and other nonsense - you need to clearly plan every turn.
If Gogs are built in the castle, the sequence is as follows:
+1000, Guild level 1, Demons, Ifrits, Pitfiends, reserve day (if necessary, you can build a market) and on the 7th day, Devils (!)
If it is clear that it will not be possible to get Devils, then we switch to Castle with Ifrits and get the standard option - 6 Ifrits in the second week.