24 achievements for 1000 Gamerscore
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Legion Confrontation
Completed all campaigns under normal difficulty.
45 Gamerscore
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Legion Devastation
Completed all campaigns under veteran difficulty.
75 Gamerscore
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Legion Acquainted
Completed all campaigns under noob difficulty.
15 Gamerscore
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Housing Crisis at Area 51
Shot down 500 UFOs.
10 Gamerscore
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Someone Likes Me
Played in Local CO-OP Mode.
15 Gamerscore
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One for the Books
Scored 2,500,000 points or more during any single stage.
75 Gamerscore
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Terror Cracker
Defeated Terror Cracker.
15 Gamerscore
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Dread Feller
Defeated Dread Feller.
15 Gamerscore
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Turborghini
Defeated Turborghini.
30 Gamerscore
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War Gear III
Defeated War Gear III.
30 Gamerscore
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The Roaring Steam
Defeated the Roaring Steam.
45 Gamerscore
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The Lord of War
Defeated the Lord of War.
45 Gamerscore
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Big Dora
Defeated Big Dora.
75 Gamerscore
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Bang! Bang!! Bang!!!
Performed 10x hits.
15 Gamerscore
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Hey, Watch It!
Been bumped into by a supply robot.
15 Gamerscore
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Can't Touch This
Complete a stage without receiving a single hit.
30 Gamerscore
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The golden medal of Noob: Part 1
Defeat all enemies in Stage 1(Noob).
30 Gamerscore
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The golden medal of Normal: Part 2
Defeat all enemies in Stage 2(Noob).
30 Gamerscore
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The golden medal of Noob: Part 3
Defeat all enemies in Stage 3(Noob).
75 Gamerscore
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The golden medal of Normal: Part 1
Defeat all enemies in Stage 1(Normal).
30 Gamerscore
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The golden medal of Noob: Part 2
Defeat all enemies in Stage 2(Normal).
45 Gamerscore
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The golden medal of Normal: Part 3
Defeat all enemies in Stage 3(Normal).
75 Gamerscore
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The golden medal of Normal: Part 4
Defeat all enemies in Stage 4(Normal).
75 Gamerscore
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The golden medal of Normal: Part 5
Defeat all enemies in Stage 5(Normal).
90 Gamerscore