A quick and easy guide to getting every achievement in the game. Spoilers(?) abound.
The easiest way to do this is to harvest from one of the first two bandits at the beginning of the game. Then, put the organs in the fashion you see in the achievement image. (Heart is the only organ not visible, but it should be in the uppermost middle slot).
This is part of the tutorial. You’ll be given three shots immediately, and pressing the bind will trigger the achievement.
Equipping this organ will cause your screen to distort, and enemies to spawn. Upon killing these enemies, the screen will return to normal, and the achievement will trigger.
The pickled liver is the best digestive organ in the game, and is also relatively small, so keeping it isn’t a bad idea if you eat a lot of bodies.
NOTE: It IS possible for this event to bug and the screen to remain distorted. Reloading will fix this.
There’s also a biometric key, which you’ll need to get out of the area, so make sure to grab those.
Easiest method I’ve found is to strafe around the entrance of the arena, and fire at it’s open mouth with the SMG. Be sure to bring two for an increased ammo pool. Don’t bother too much with running around the map unless you’ve equipped a lot of lungs.
Leave your weapons in the crate next to this entrance, and proceed. Inside of the arena, there’s a corpse that will have “The Heart of the Storms”, which will make your finger gun insanely powerful.
Kill all the enemies inside, and the achievement will unlock.
Following the conversation, go directly South, East, and West of the village to the bandit camps. You’ll see a white box (the only one that isn’t a crate), and you’ll be able to interact with them. Hit “yes” on all of them.
Speak with the mayor once more. The achievement will trigger.
This is easiest with either the grenade launcher or the bullpup gun. Just run backwards in a circle around the perimeter and fire.
GUIDE TO GETTING TO THIS LOCATION:
Speak with the Mayor after getting the “Heroine of the Trees” achievement. He(?) will tell you that you need to ask around the village for additional information.
Go to the house southwest of his and speak to the NPC in a hat. Ask about Lenhe.
Speak with the Mayor again.
Head Southeast from the house, and you’ll find a large bandit camp and a door behind it. Enter through this door.
The event to enter this door will NOT trigger until this set of events has been completed.
Head through the “main road” of the village until you hit the last house, then take a left before you pass the large rock at the edge of the village. You’ll see a white tree, and on the side of it, you’ll see a flower with a cat on it.
Jump up, grab the cat, and then return to Jesher.
Once the cat has been placed on it’s bed in the house, kill it with any weapon you have at your disposal. The achievement will unlock once the cat is dead.
Also the village will try to execute you. You monster.
Honestly impossible.
Thanks to Porter for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.