Here is the full list of all 20 JARS achievements.
Buy first asset from Shop
Unlock fully an entry in Encyclopedia
Equip first perk
Complete Stairs
Lose a level for the first time
Complete Shelves
Complete Fridge
Complete Cellar
Complete Laundry
Complete Catacumbs
Activate a collectible
Find all collectibles
Buy all minions from Shop
Buy all perks from Shop
Unlock all encyclopedia entries
Master a Hero
Master all Heroes
Get 10k blood essence
Use 100 items
Deploy 100 minions