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