Here is the full list of all 77 Swordbreaker: Origins achievements.
Participate in the resurrection of the dendroid
Help Chester
Kill the wolves
Kill Altronius
Kill the bandits
Kill the Nyan monster
Kill the fisherman skeleton
Kill Z-man
Kill the One-legged Horseman
Kill Jackie Tyan
Kill the cannibal
Kill Diane
Kill the farmer
Kill the chupacabra
Kill the elven guards
Kill the lizard
Kill the amazon
Kill the werewolf
Kill the xenobug
Kill the huntress
Kill the Yeti
Kill Baba Yaga
Kill the nix
Kill the dragon
Kill the harpy
Kill the cartbot
Kill Xana
Kill Lord Bloodgroove
Kill the scolopendra
Kill the Gorgon
Kill King Stefan
Use the skeleton's help
Use Chester's help
Use the xenobug's help
Use Solomon's help
Give a flower to Baba Yaga
Shave the water sprite's armpits
Use the black hole generator
Use the flask with chemicals
Use the Z-man's suitcase
Return the medallion to the fisherman skeleton
Help the captive in the forest
Help Jackie Tyan
Help Diana with the collider
Spare the cannibal
Help the farmer
Help Solomon
Help Valkyrie return home
Spare the xenobug
Spare the huntress
Spare Jackie
Spare the Yeti
Spare the harpy
Spare the water sprite
Spare Baba Yaga
Spare the bandits
Learned more about the world and Daniel from the dialogues
Sleep with all the girls
Reveal the farmer's secret
Complete the goblins' task
Finish the game as a Hero
Finish the game as a Killer
Finish the game as a Coward
Finish the game with the Elves ending
Finish the game with the Vampires ending
Finish the game with the Huntress ending
Finish the game with the Devil ending
Finish the game with the Bloody Sunset ending
Win all mini games
See 30% of deaths in the game
See 60% of deaths in the game
See 100% of deaths in the game
Unlock 30% of the game scenes
Unlock 60% of the game scenes
Unlock 100% of the game scenes
Finish the game in any way without dying
Get all achievements