Here is the full list of all 24 The Weaponographist achievements.
Beat all Depths on Hardcore.
Unlock all jinxes by playing Survival.
Reach and clear Room 30 on Survival Mode.
Reach and clear Room 10 on Survival Mode.
Unlock three jinxes by playing Survival.
Unlock one jinx by playing Survival.
Banish the menace behind the dungeon.
Topple a seven story murderer.
Crush an ice wizard who was really only looking for a friend.
Beat one Depth on Hardcore.
Massacre 300 demons in a single combo.
Destroy an angry marionette before it self-actualizes.
Raise one weapon to its absolute peak.
Get to Exp Level 8.
Collect 100,000 Goop at one time.
Rack up 200 kills in a single combo.
Attain Exp Level 5.
Collect 10,000 Goop at one time.
Collect two Health Runes in the same playthrough.
Improve your leaderboard time for any level.
Dispatch a Terrible Lizard from the past. (Future?)
Attain a 100 kill combo.
Attain your first checkpoint.
Raise one weapon to its current level cap.