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