Here is the full list of all 11 Dungeons & Keyboards achievements.
Type 50 words without a typo or timing out
Deal 50 critical hits back to back in one tower climb
Defeat Garbaj Rat, Lord of Garbage
Purchase an item at the Cool Cat's Corner
Defeat Skullcula
Defeat Catctus
Defeat Keyboard Bot X3000
Encounter a Mimic
Climb 50 floors without a typo or timing out
Type 100 words without a typo or timing out
Upgrade S-Word or Fireplace at Ershin's Smithery