Here is the full list of all 20 Trapers Platformer achievements.
Be betrayed by the talking cactus
Get all four weapons
Get 3 sword upgadres
Get 3 gun upgrades
Get 10 attack upgrades
Get 10 health upgrades
Save the orcs in the dungeon
Exterminate the orcs in the dungeon
Find the first treasure map
Find the second teasure map
Get the lava immunity
Get the spike immunity
Find the business card
Help the shop keeper at golem town
Defeat the first boss
Beat General in a duel
Defeat the final boss
Get every item in the game
Find the infinite pizza
Have 250 coins in your pockets