Here is the full list of all 20 BreakFest achievements.
Ask Bob for free guns and ammo
Discover the hidden truth and corruption of GRID
Meet Eddye For The First Time
Meet Alsey For The First Time
Meet Corey For The First Time
Defeat Manglarr
Defeat Hunteer
Defeat Rangler
Know Your Limits
Let It Digest
Why was there a phone call?
Receive a unwanted reply to your SOS message.
Beat Charred Mode.
Beat the game while only using less than 750 bullets.
Defeat 500 Bacons.
Die 15 times or more in one game.
Unlock All Gunsmith gun mods.
Back To Square One.
Find Corey's wife journal.
Find Jeryll Base.