Here is the full list of all 21 Inside Me achievements.
Gather 100 energy
Gather 300 energy
Gather 500 energy
Kill Genetrix
Kill Spiker
Kill the infected agent
Complete whole game without dying
Blow up protective fields in main game
Complete the dark level
Freeze protective fields and blow them up in main game
Survive the first wave
Survive the second wave
Survive the third wave
Survive the forth wave
Survive the fifth wave
Survive the sixth wave
Survive the seventh wave
Survive the eighth wave
Survive the ninth wave
Survive as long as you can
Kill Leviathan