There is one chance to get this in a playthrough and failure will result in having to start another game. You can delete local saves and play off-line in order to repeat this section.
How to find the Black Chomper
There are stoves located in all four of the bases throughout the game. When you cook meat, red eggs, embryos, mushrooms, fish etc. you can purchase perks. Every time you purchase a negative perk, there is a chance you will enter 1 of 4 randomly selected dreams. There is a 5th dream if you selected the extra content at the start of the game. One of the dreams will take place in a forest. At the end of the path will be a shovel, and empty grave and a talking corpse. You have the option of sleeping in the grave(good for another achievement), running back to the start or fighting the Black Chomper.
If you find yourself in this dream you can go offline to prevent your probable failure from being saved online. Another option here is simply to quit the game. This will create a backup online that will start you right at the dream. However, I recommend NOT trying to take the black chomper on until your 7th perk upgrade. You will probably be on chapter 7 by that point. This will allow you to have a few more perks/health going into the fight. If you do get the chomper dream early on enter the grave instead or playoff line and repeat to get another dream to complete instead. By having the 7th perk, you will have more health or other perks that will make taking on the chomper less challenging.Strategies for the Chomper
-I spammed the hell out the pause button to give myself more time to react; in the video I did not abuse it as much as I did in other attempts.
-I never used the full swing but rather the
-I reconfigured the controller so I could use the dodge function easier. If you want to do this you have to go into settings on xbox menu. I swapped
-For perks, I liked the acid blood but I went back and forth on the adrenaline/more health. I defeated the chomper with adrenaline.
-Find videos of others doing this and find what works best for you.
-Go for this achievement during your second playthrough to give yourself a chance to get better with the difficult controls of the game.
-Creating a save point at the stove rather than in the dream itself gives you an opportunity to exploit a small positive glitch.
---Go back online the second you beat the sucker!!
I never exactly figured out how to do the glitch but I think it has something to with going offline/ disconnecting the controller as the dream is loading. The glitch allows you to see all around you but you can not see your health/stamina either.
You are going to find the hardest part of this is not so much the fight but the impatience of have to reload the game. You spend 1 minute fighting and 5 minutes loading.