Complete “Promisssse Me the Moon” without taking any damage
Complete “The Adder's Abyss” without taking any damage
Complete the game on normal difficulty
Complete the game on the hard difficult
Complete the game on the hardest difficulty level
Complete “Madness in the Mountains” without taking any damage
Complete “World in a Bottle” in under 3 minutes
Complete “Reign of Cobra” in under 3 minutes
Complete “A Sky Full of Snakes” in under 3 minutes
Complete “Cobra World Order” without dying
Complete “A Snake in the Grass” without dying
Complete “Assault from Above” without dying
Complete the first level
