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