Here is the full list of all 26 Obludia achievements.
Cast 50x Ring of Fire spell
Cast 50x Glacial Spike spell
Complete the game.
Complete World 5 – Space Ship
Destroy 50 Alien eggs
Complete World 4 – Hell Gate
Complete World 3 – Frozen Island
Slay 30 Ghosts.
Complete World 2 – Ancient Tower
Die 50 times
Cast 50x Lightning Strike spell
Throw 50 dynamites.
Fire 100 Shotgun Shells
Find 20 chest.
Use 10x Holy Cross.
Slay 20 Devils.
Save 10 princess.
Find 1000 Coins.
Slay 100 monsters with blade.
Slay 20 chickens.
Buy your first dog.
Complete World 1 – Dungeon of Doom
Eat 20 Hamburger.
Find the legendary golden monkey statue
Slay your first enemy.
Complete the game on HARD mode.