s3rialthrill3r: Would you say that there are major features which have been broken?
The mentioned AI thing I dont know enough about because I only ever played the newer versions - I think 2.4 forward or sth.
The mentioned AI tactical summoning bug is for me serious enough to postpone playing the game until its fixed. Or going back to a version when it still worked. But I dont think I would call this a "major feature".
(And I think there were other things which supposedly broke in some older patches. I have read a lot of posts about FELH but this is from before I started playing.)
s3rialthrill3r: Or would they not be so noticeable?
The tactical AI summoning bug is noticeable. It will print text like "X summons Y" but in ~90% of cases Y wont appear.
s3rialthrill3r: If it helps, I tend to play games on the hardest difficulty unless it becomes an absolute chore to overcome a cheating AI, for example.
Based on my own experiences playing the game (I am a very strong player, have certain preferences for maps and settings, my game is modded) the AI is very bad and the only way to make it challenging is to crank up the difficulty to the highest level. At which it will have extreme boni ("cheating") and I think also cheat in a qualitative manner like being able to see through the FoW.
But note that its possible to set up the game so that the AI opponents arent the interesting challenge. You can crank up the world difficulty so that monsters are the main challenge.
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The currently biggest problems I have with FELH 2.5.1 in this order:
1) End turn hangs. (This can happen a lot if the combination of map size and AI power is high.)
2) AI is incompetent.
3) AI controlled tactical summons dont work.