Here is the full list of all 26 Kalaban achievements.
Find an apple
Find the flashlight
Get your first armor
Kill 100 enemies
Maybe that was not wise
Why would there be keys in a locked car?
Sometimes you just need something to get through the day
Finish the game
Visit the sauna
Drink all the beer and whiskey you can
Save your boss
You died
Complete the bartender's quest
Spare his life
Find the keys to the big house
Find the bag of something
Find that certain gun
Build the flamethrower
Keep on clicking the outhouse
Kill the huge tree monster
Reunite the sisters
Tamper with the plant computer
Start the generator
Kill an enemy with the explosion of a Blow-up
You've discovered the mysterious fungus
You've saved the two guys at the junkyard