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Half-Life Game Cheats Page

Half-Life Cheats

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Half-Life cheats
 
Publisher: Sierra Entertainment
Developer: Gearbox Software
Release Date: November 2001
Genre: Sci-Fi
Last Update: 11 months ago
Other Platforms:  
PC | PS2
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Bonus Alien Mission
Cheat Description Cheat

Get an A-grade on all 9 of the Decay missions. If you successfully do this, you'll get to play a 10th level as a Vortigaunt alien. Getting an A-grade on this level will formally unlock the Alien Mode. (Note: the best way to ensure an A-grade for a level is to get at least 25 kills.)
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Half-Life
Rank: 2655 / 70852 Down1491
Rank on PS2: 449 / 4534 Down259
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