For those that have missed getting these achievements and do not wish to replay the game just to get them
How To Use
Download the save files in the link provided here[drive.google.com] and place the ‘quest_hunter_save’ (found in the folder) into the following default save game location:
***Note: <user-id> is different for everyone and is represented by a bunch of numbers***
Simply load the game and click on the saved game.
Instructions for each achievement are provided if needed but it’s saved to the closest point when the achievement should be earnt.
If require both achievements, replace the new file ‘quest_hunter_save’ with the other achievement file after completing the achievement, then reload the save game.
On The Enemy’s Side Achievement
Once you’ve put the file above in the save game location (as described in the How To Use section), continue on for the achievement.
When the game starts, head left past the mine entrance
Then head up through the gates
Finally speak to the leader and the achievement should pop
Chef Achievement
Once you’ve put the file above in the save game location (as described in the How To Use section), continue on for the achievement.
Once the game has loaded, simply talk to the woman and once you get through the dialogue, the achievement should pop.
Thanks to Monkey for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.