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