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