7 Days to Die

Below solution use the game glitch and probably will be patch for future update, it require a boosting partner

Credited to Topsi Krett when i PM him to enquiry the glitch

1. Create a private game and invite your boosting partner
2. Collect at least 1 vitamin (find at some pop pin pills store)
3. Craft a stone axe
4. Collect at least 8 stone
5. One player craft a campfire (require 8 stone)
6. Press "Y" to use campfire
7. Put vitamin (or any resources you want to duplicate) at the output section, DO NOT CLOSE THE MENU
8. 2nd player use the stone axe to destroy the campfire, then craft a campfire at the SAME LOCTION
9. 2nd player press "Y" to use campfire, collect the resources at output (in this case the vitamin)
10. Close the menu and press "Y" again, the resources should still stay there allow you collect indefinitely
11. Once completed (you should need around 300-400 vitamin to increase to 200 wellness)
12. Take turn for another player

As of 6/25/2020 this works proven by myself and ikilledbecka.

Note: This WILL NOT work split-screen!

1. Create a Private Game on NAVEZGANE with zombie spawns disabled and invite the person you plan on duplicating with.
2. Collect at least 1 vitamin most commonly found in Pop-N-Pills. One can be found in the city on the east side of the map (645 N 1150 E).
3. Craft 2 stone axes.
4. Collect some wood and create 5 secure storage chests. Use the duplication method below to duplicate any wood, extra secure storage chests, or axes you need.

Now for the duplication process:
1. Keep a chest somewhere to hold excess vitamins.
2. Host places 5 secure storage chests in a straight line and breaks the lock on each turning them into storage chests that your partner can open.
3. Host then stores up to 5 stacks or 250 vitamins total into a single chest, anymore than that and it may not work.
4. The 2nd player now takes each stack of the item inside the chest (Do not loot all (LS), only press RS on the individual items) and puts it in their inventory. Keep the menu open and let the host know to break the chest. Once destroying the chest a bag will pop out with the items copied. It will take approx. 750 or 15 stacks of vitamins for each player to get the achievement.

If you'd like to follow a YouTube video here is the one that taught me the method, credit goes to TDG297 for making it:
I have a world set up for the achievement, for more info join the community discord: https://discord.gg/EhMFzcw