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