Here is the full list of all 84 Rampage Knights achievements.
Open 20 chests.
Hit enemies 25 times with a throwing weapon.
Use 3 scrolls.
Acquire double jump.
Get treasure from the forest den.
Kill a giant.
Complete Grant me revenge!, Crush and Oversized.
Get drunk.
Crush 10 enemies by stomping.
Kill 50 enemies.
Die 3 times. Get an access to a casual mode.
Win the battle on the castle bridge.
Kill your first boss.
Complete Bullseye, Why so jumpy? and Assassinated.
Deal 10000 points of damage with magic.
Find 10 books of magic.
Complete Adept of Magic, Scribbler and Librarian.
Collect 1000 gold.
Complete Give me the booty, Open sesame and Early in the morning.
Kill 100 demons.
Use 5 altars.
Remove any curse from yourself.
Complete A Devilish Rock Off, Exorcist and Elder ones.
Win the game.
Win the game on Hard difficulty.
Win the game on Insane difficulty.
Win the game with all classes on Hard or higher.
Win the game without dying on Hard or higher.
Complete King, Jack of All Trades and Untouchable.
Win the game in less than 30 minutes.
Die 5+ times and still win the game on Hard or higher.
Deal 5000 points of burn damage.
Freeze 200 enemies.
Poison 200 enemies.
Hit 200 enemies with explosions.
Stun 100 enemies.
Destroy 200 shields.
Kill 100 enemies with stomp.
Slam enemies 200 times to the ground with upper cut attack.
Send 200 enemies flying by kick.
Kill 10 enemies with the dwarven contraption.
Kill 25 enemies cursed by the Book from the Cabin.
Decapitate 25 enemies.
Kill 1000 enemies.
Throw 200 enemies into chasms.
Kill 100 giants.
Drop 10 giants into a chasm.
Hit for 250 or more with a single hit.
Hit 7 enemies with a single throwing axe.
Hit 7 enemies with one dash attack.
Build the hit counter up to 50.
Kill 10 enemies with the Mighty Foot.
Heal 5000 hp.
Clear 100 rooms without being hit.
Kill 25 enemies in a row without being hit.
Deal 100000 points of damage with magic.
Kill 10 wizards.
Go through 1000 rooms.
Destroy 10000 decorations.
Drink up 200 potions.
Buy 100 items.
Buy the shop out.
Have 1000 gold in your pocket.
Lockpick 200 chests.
Lockpick 50 chests without fail.
Have 7 familiars at once.
Have 3 curses at once.
Open 13 demonic chests.
Loot graveyard.
Get high with the magic mushroom.
Complete Grave Robber, Get Trippy and Forest Den.
Find all haunted inns (the devil, potion shop and ghosts).
Turn all cards in the game with the devil.
Kill the cook.
Hit all rewards on the Wheel of Misfortune.
Collect more than 70 gold during the Gold Rush event.
Win a multiplayer game.
Resurrect a friend via combat in a multiplayer game.
Win all statistics when completing a level.
Win the game in Shadow World.
Find and kill Rolf Ironbutt in the Endless Dungeon.
Win the Bombo-Rama mutation.
Win the Flying Daggers mutation.
Win the Arena mutation.