Here is the full list of all 31 Bloody Trapland 2: Curiosity achievements.
Reached mnt world
Defeat desertboss
Picked up coin
Found hidden coin
Found hidden passage
Reached Desert world
Activate first artifact
First time on a boat
Defeat Skogstrollet
Open first secret door
Complete 3 levels without any deaths
Collect first crystal
Find temple entrance
Collect first coin
Find secret passage
Close encounter
Complete a level without any deaths
Complete 5 levels without any deaths
Complete 10 levels without any deaths
Complete 20 levels without any deaths
Reached cave world
Unveil last level
Activate hidden btn
Find hidden coin
Defeat mnt boss
Open passage with button
Stinky unlocked
Find hidden entrance
Defeat cave boss