Let's suggest some achievements to the glorious devsquad. Lutefisk Event Horizon: Put a lutefisk cube inside a lutefisk cube. God, I Feel So Zoo-pid: Die fighting zoo monsters. SO CLOSE: Die fighting Dredmor on permadeath mode.
The Fish is a Lye - Convert 250(300, 500?) items into Lutefisk with the Lutefisk Horadric Cube in a single playthrough. The Voices Made Me Do It - Burn or set on fire 35 monsters within 7 turns. These Are Not The Diggles You're Looking For - Charm 50 monsters with Unconditional Love. Dwarven Duty - Destroy an artifact for a side-quest that looks like a cat.
I think we should have achievements for things along the lines of Nethack's conducts/voluntary challenges. For example (most of these assume vanquishing Dredmor): Athiest - Don't use any Lutefisk, Inconsequentia or Krong shrines/anvils. Hungry - Don't use any food. Untouchable - Don't take any damage. Down in Mexico - Don't drink from any bowls of water. Vegan Power - Don't eat any meat. Nudist - No armor. Favorite Clothes - Equip only your starting items. Toolless - No crafting. Full Potential - Learn all levels of all skills on a character. Cartographer - Explore all levels and leave all doors open. Artifactless - Never equip an artifact. That's all I can come up with off the top of my head. I tried to find a good Indiana Jones quote for the last one, but failed.