The Chosen Ones

Firstly remove or reduce the achievements about 999,999 gold because with the current state of 5k limit per riddle question it is impossible to get there without about 20 give ups. It may have been OK before the 5K limit though.

Suicide Artist (die 10 times or more in one chapter) should be included.

About The Pathfinder (get through maze perfectly in chapter 4) I think it should be included. The argument against was that it makes it stressful, you should want to relax and go where you like. But that isn't the case because it's not like you have to get through perfectly EVERY time. Just do it once and get on with the game, achievement accomplished, you can relax as much as you like right?

Dragon Slayer and Master Slayer are alright.

Keep all heroes HP and mana above 50% in a chapter sounds alright to me

Finishing campaign without using a single honor point is also a good one.

These two are pretty much compulsory:
- Defeat Slurgal without letting anyone die
- Defeat Xada after letting him transform
so that people have an idea of the rewards, because if this forum didn't exist I would never have guessed either of those.

I also think these should be included:
Bow before me: Deal 10000 damage without taking any yourself
Complete idiot: Let a boss heal up 50% of their own HP and defeat them (applies to bosses that can heal - Noc'toriah, Ch2 epic Fradz, Xada, etc)
Juggernaut: Take 20,000 damage within 3 seconds without dying
Godlike: attain over 150000 magic damage

And something similar to this:
No hands: defeat ch 1 main boss only using spell damage (no physical attacks)