Full list of all 28 Fossilfuel achievements.
The base game contains 27 achievements, and there are 2 DLC packs containing 1 achievements.
Start your day at the Sierra Research Institute.
Get to know some of the scientist.
Land of the blind no more!
Meet Utahraptor. (Single Player)
Discover the mystery of the ex game warden.
Defeat Titanoboa. (Single Player)
Restore the sub-level power.
You have escaped the lower sub-level of Sierra.
Snap a neck.
Defeat an Allosaurus. (Single Player)
Make a last stand with the other survivors.
Take down the mutant dino. (Single Player)
Get to the surface of the Great Sitkin Island.
Make it to the Sierra laboratory.
Unleash bugs onto the soldiers.
Have $1000 credits.
Find the gravity grenade, "Black Hole" gun.
Get the Focus Beam.
Enter the Power Plant.
Overload the Nuclear Reactor.
Stabilize the Nuclear Reactor.
Defeat the T-Rex!
Ending B: Nuke Sierra.
Defeat Elon Moosk, in his Cyber Tank.
Ending A: Find the truth.
Beat the game on the hardest setting.
Beat the game on hard, and get an S rank.
Defeat the Queen bug.