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