19 achievements for 1000 Gamerscore
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The Space Station
Beat all the space station levels (episodes 1-11)
100 Gamerscore
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The City
Beat all the city levels (episodes 12-20)
100 Gamerscore
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Hell
Beat all the hell levels (episodes 21-30)
100 Gamerscore
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The Master Levels
Beat all the Master Levels
150 Gamerscore
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I'm Superbad!
Beat DOOM 2 in under 2 hours
150 Gamerscore
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Butcher
Get 25 kills in deathmatch
25 Gamerscore
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Glorious
Get 100 kills in deathmatch
50 Gamerscore
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When I'm With You
Beat every level on Nightmare in co-operative mode
50 Gamerscore
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Until It Is Done
Get 100 chainsaw kills
50 Gamerscore
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Heavenly Joy
Shoot 200 bullets consecutively with the machine gun
25 Gamerscore
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Bad Monster!
Kill yourself and an enemy with your own rocket explosion
25 Gamerscore
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Skeet Shooting
Kill 4 enemies in 1 shot with the super shotgun
25 Gamerscore
-
Superior Firepower
Kill 12 enemies in one shot with the BFG
25 Gamerscore
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That Can't Be Good
Take damage from an environmental hazard
5 Gamerscore
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Not So Friendly Fire
Cause an enemy to kill another enemy
25 Gamerscore
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Slip of the Finger
Kill a teammate in co-operative multiplayer
5 Gamerscore
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It's a Secret
Find a secret level
15 Gamerscore
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Not a Very Good Secret
Find all the secret levels
25 Gamerscore
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Indiscriminate
Kill one of every enemy
50 Gamerscore