Here is the full list of all 88 I am not a Monster: First Contact achievements.
Complete "Portal"
Complete "Sector 17"
Complete "Old School"
Complete "Mr. X"
Complete "Light in the Dark"
Complete "Dark Side"
Complete "Phoenix"
Complete "Vicious Circle"
Complete "Magician"
Complete "Stubbornness"
Complete "New Hope"
Complete "Laser Power"
Complete "Metro"
Complete "Escape"
Complete "Revelation"
Complete "Indestructible"
Complete "Sisyphean Task"
Complete "The Belly of the Beast"
Complete "Do Not Feed the Animals!"
Complete "Do Not Touch!"
Complete "Plan B"
Complete "Fresh Air"
Complete "Whose Shuttle is This?"
Complete "Death to Earthlings"
Complete "Black Sheep"
Complete "We're Family"
Complete "Call of the Sky"
Complete "Ambush"
Complete "Betrayal"
Complete "You're Fired!"
Complete "Massacre"
Complete "Transformation"
Complete "Diamond Tears"
Complete "On Tiptoes"
Complete "Deadly Party"
Complete "Welcome!"
Get "Beast" trophy in the game
Infect 500 humans
Get "Space Legend" trophy in the game
Win 500 battles
Save 1,000 civilians
Get "Perfect Hero" trophy in the game
Remove infection 3 times
Get "General" trophy in the game
Deal 50,000 damage with explosives
Get "Hero Certificate" trophy in the game
Fill the morale bar 10 times
Get "Monster Mastery" trophy in the game
Win for the monsters without dying
Get "Hero In Action" trophy in the game
Save 100 civilians
Kill 1,000 enemies
Turn a hero into a monster
Get "Officer" trophy in the game
Deal 5,000 damage with explosives
Recover 10,000 HP
Get "Ruthless" trophy in the game
Infect 100 humans
Deal 50,000 damage with bullet weapons
Deal 5,000 damage with melee weapons
Win 20 battles
Get "Rescuer" trophy in the game
Save 10 civilians
Deal 50,000 damage with energy weapons
Deal 5,000 damage with bullet weapons
Deal 100 damage with explosives
Deal 100 damage with melee weapons
Deal 1,000 damage with melee weapons
Get "Cruelty" trophy in the game
Get "Soldier" trophy in the game
Kill 100 enemies
End the battle without getting Guilt
Use heroic ability 5 times
Recover 1,000 HP
Win for the humans without dying
Recover 100 HP
Deal 5,000 damage with energy weapons
Kill 10 enemies
Deal 100 damage with bullet weapons
Deal 100 damage with energy weapons
Infect 5 humans
Win 5 battles
Complete "Technicalities"
Complete "Last Dance"
Complete "An Otherworldly Hangover"
Complete "Lead Role"
Complete "Laser’s Fist"
Complete "Creature From Space"