Here is the full list of all 45 Crawl achievements.
Pass all the vault challenges
Kill a total of 666 monsters
Get two tombstone powerups on one monster
Defeat Ghidraak with more health than when you started
Defeat Kourok without hitting any bombs into him
Defeat a boss while bleeding for the entire fight
Slay a giant monster with a pebble
Regain your humanity 100 times
Max out your hero's strength
Min your hero's agility
Slay a giant monster with a boulder
Win a 1 on 1 battle against the hero, while both wielding bows
Spend a total of 5000 gold
Clear out a store by buying every item
Kill 3 monsters with a single crossbow bolt
Win a game without ever dying
As a gnome, mine a total of 10 gold from heroes
Win an intro battle without ever moving
Slay all other heroes in an intro battle with 3 hard bots
Pass 10 vault challenges
Pass the Gargoyle challenge
Pass the Spikewurm challenge
Achieve the victory screen title "Infinite Horror"
Discover 50% of entries in the vault
Regain your humanity 50 times
Damage Kourok's exposed brain with a bomb creature
Pass the Necromancer challenge
Pass a vault challenge
Kill a total of 100 monsters
Defeat a boss while nauseated
Spend a total of 1000 gold
Discover 25% of entries in the vault
Regain your humanity 10 times
Get a kill streak of 12 against 3 hard bots
Spend a total of 10000 gold
Discover all entries in the vault
Discover all weapons in the vault
Taunt Glub and win against 3 hard bots
Taunt S'hrim and win against 3 hard bots
Taunt Qaahl and win against 3 hard bots
Taunt Gor and win against 3 hard bots
Taunt Gholoth and win against 3 hard bots
Defeat Kourok, playing against 3 hard bots
Defeat Ghidraak, playing against 3 hard bots
Defeat Tezekcal, playing against 3 hard bots