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