Make all possible combinations in the inventory.
Pierce a car gas tank and fill a bottle with the fuel.
Continue playing to unlock this secret achievement.
Complete the game.
Finish the episode without skipping any sequence.
Burn all roots of evil.
Burn half of the roots of evil.
Find a car key in the sun visor.
Kill 100 Humanz.
Beat the Museum Monster.
Build the most destructive weapon.
Drive at least 10 miles with a vehicle.
Burn one of the Vampirz.
Combine an empty taped bottle with a wick and an emergency flare.
Burn a fissure.
Bandage 5 deep bleeding wounds.
Finish off a Humanz by shooting fire bullets at it's fissure.
Kill 3 Humanz at once.
Combine a taped bottle filled with flammable content or a spray with a glowstick.
Burn a Ratz nest.
Insert a wick into a bottle with flammable content.
Make a fire bullet by pouring flammable liquid on it.
Shoot a goldfish.
Burn a cocoon.
Kill any Humanz with the 'spray + lighter' combination.
Throw a bottle filled with flammable liquid and shoot it mid-air.
Call all contacts in your address book.
Hotwire a car.
Unlock a car door after breaking the window.
Kick 10 Ratz.
Take a bottle filled with flammable content or a spray and combine it with an adhesive.
Tape up a bottle.