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