Here is the full list of all 31 Runic Rampage achievements.
Unlock all other achievements
Defeat 5000 enemies
Take 50000 steps
Loot 100000 gold
Eat a pumpkin
Equip the Royal Cepter
Defeat the Boss of Chapter IV
Learn all spells
Defeat the Boss of Chapter III
Destroy 50 wood stumps
Destroy 50 rocks
Destroy 100 barrels
Posess 10000 gold
Max out an attribute
Defeat the Boss of Chapter II
150x Combo
Forge a weapon to its perfection
Defeat the Boss of Chapter I
100x Combo
Destroy 100 vases
50x Combo
Defeat 100 enemies
Loot 1000 gold
Take 500 steps