25 achievements for 1000 Gamerscore
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Beneath
Beat the first stage of the game.
10 Gamerscore
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Slayer
Vanquish 25 enemies.
10 Gamerscore
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Destroyer
Vanquish 100 enemies.
20 Gamerscore
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Annihilator
Vanquish 300 enemies.
30 Gamerscore
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I Need Healing
Pickup 100 Health.
20 Gamerscore
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I Need Armor
Pickup 100 Armor.
20 Gamerscore
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I Need MORE Healing
Pickup 300 Health.
30 Gamerscore
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I Need MORE Armor
Pickup 300 Armor.
30 Gamerscore
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Pew Pew!
Fire your first weapon 100 times.
10 Gamerscore
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Seeker
Find 5 Secret Areas.
20 Gamerscore
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Explorer
Find ALL Secret Areas.
40 Gamerscore
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Extra Health
Pickup 3 Health Upgrades.
20 Gamerscore
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Extra Armor
Pickup 3 Armor Upgrades.
20 Gamerscore
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Extra Ammo
Pickup 3 Ammo Upgrades.
20 Gamerscore
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Full Health
Pickup ALL Health Upgrades.
40 Gamerscore
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Full Armor
Pickup ALL Armor Upgrades.
40 Gamerscore
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Full Ammo
Pickup ALL Ammo Upgrades.
40 Gamerscore
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Arsenal
Obtain the first 3 Weapons and their Add-ons.
20 Gamerscore
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Weapon Master
Obtain ALL Weapons and their Add-ons.
40 Gamerscore
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The End!
Beat the last stage.
60 Gamerscore
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Heroic Beginning!
Beat the third stage in Heroic Mode.
40 Gamerscore
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Full Story
Find and read ALL the Log Files.
40 Gamerscore
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Exterminator
Destroy 500 enemies in Heroic Mode.
80 Gamerscore
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Heroic Ending!
Beat the final stage in Heroic Mode.
100 Gamerscore
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Completionist!
Get all the other achievements.
200 Gamerscore