Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Amputation	Cut off both limbs of an enemy trooper.
Citadel	Find your way to the mothership "Twinkling Star".
Dead Hand	Destroy all the security turrets of the Perimeter.
Demolition Expert	Destroy a turret using an explodable barrel.
Disarmament	Disarm an enemy with a disc by depriving him of his gun... and the claw!
Experiment	Locate the experimental portal.
Explorer	Find all the secrets on a game level.
Full Load	Collect an arsenal of all weapon types.
Full Sweep	Kill all the enemies on a game level.
Gut Feeling	Visit the guts of a strange creature.
Insecticide	Smash twenty cockroaches.
Key Master	Collect all the keys in the game.
Lost Their Head	Decapitate an enemy with your firearms.
Megatrend	Find and use six mega-health items.
My First Upgrade	Upgrade one of your weapons.
Ninja	Pass by the laser trap without getting damaged.
Nostalgia	Discover the super-secret corridor from the good old game.
Nothing but the Best	Install all available weapon upgrades.
Punisher	Kill 500 enemies.
Pure Water	Kill 25 small predatory fish.
Readme	Read all the datacubes in the game.
Ricochet	Kill ten enemies with disc's ricochets.
Rookie	Beat the game on the "Easy" skill level.
Saboteur	Arrange a murder of an enemy by his partner's rocket.
Scalping Permit	Cut off fifteen enemy's heads with a disc.
Scorpion Kick	Kill fifty scorpions.
Soldier	Beat the game on the "Medium" skill level.
Starship Troopers	Activate the Cargo Teleportation System.
Step Right Up	Use all available power-ups.
The Prize of Peril	Activate the chronosphere.
Uplink	Restore communication between the Colony and the Earth.
Veteran	Beat the game on the "Hard" skill level.