Here is the full list of all 88 FatalZone achievements.
Defeat 300,000 enemies
Use the Airstrike item 15 times
Hold out for 29 minutes in a raid while playing as a Survivor
Hold out for five minutes in a raid while playing as a Brawler
Hold out for ten minutes in a raid while playing as a Tank
Reach lvl. 15 in a raid with the Biotech class
Reach lvl. 20 in a raid with the Brawler class
Defeat 1,000 enemies with the Tank class
Defeat 8,000 enemies with the Brawler class
Gather 10,000 resources in total with the Tank class
Complete a raid with the Scavenger class
Hold out for ten minutes in a raid while playing as a Scavenger
Defeat 1,000 enemies with the Scavenger class
Use the Large Shock Grenade item five times
Hold out for five minutes in a raid while playing as a Pyro
Reach lvl. 30 in a raid with the Pyro class
Defeat 1,000 enemies with the Pyro class
Complete a raid with the Biotech class
Hold out for ten minutes in a raid while playing as a Pyro
Use the Airstrike item five times
Defeat 100,000 enemies
Reach lvl. 20 in a raid with the Biotech class
Defeat 1,700 enemies with the Biotech class
Hold out for 10 minutes in a raid while playing as a Biotech
Reach lvl. 60 in a raid with any class
Gather 18,000 resources in total with any class
Collect 8,000 coins in total
Reach lvl. 40 in a raid with any class
Defeat 160 enemies with the Brawler class
Defeat 40,000 enemies
Hold out for two minutes in a raid while playing as a Veteran
Take 5,000 damage in total with any class
Reach lvl. 25 in a raid with the Veteran class
Destroy 77 crates
Defeat 17,000 enemies
Defeat 5,000 enemies
Defeat 10,000 enemies
Destroy 20 crates
Hold out for twelve minutes in a raid while playing as a Survivor
Take 2,000 damage in total with any class
Use the Super Magnet item once
Defeat 1,500 enemies
Reach lvl. 10 in a raid with any class
Hold out for seven minutes in a raid while playing as a Survivor
Defeat 750 enemies
Kill your first enemy
Defeat 33 enemies
Hold out for one minute in a raid with any class
Collect 1,000 coins in total
Take 1 damage with any class
Complete a level at the Forest location while playing as a Scavenger with the Legend mutator
Complete a level at the Forest location while playing as a Saboteur with the Legend mutator