Here is the full list of all 20 Edge Of Dead: Under A Uranium Sky achievements.
Enemy sighted.
Complete the tutorial.
Defeat 10 enemies.
Defeat 100 enemies.
Defeat 1000 enemies.
Rescue Cactoid.
Rescue the scientist.
Rescue the tech.
Rescue the bot.
Defeat Skull Cruiser.
Defeat Mouth Monster.
Defeat War King.
Defeat Gun Pill.
Defeat Snake Boss.
Defeat Eye Snakes.
Defeat Spike Bot.
Find the Colony Shelter.
Find the Bunker.
Find the Utility Tunnels.
Find the Sewers.