| Trophy | How to unlock
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|---|
| Assault (Bronze) | Kill 10 Aliens.
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| Burn, Baby Burn (Bronze) | Defeat A Boss Alien Together With Flamethrowers.
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| First Blood (Bronze) | Make Your First Kill.
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| Hard As Nails (Bronze) | Complete Alien Breed.
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| He Shoots, He Scores (Bronze) | Score 1,000,000 Co-Op Points On A Level.
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| Isr4-C (Bronze) | Complete 17 Co-Op Games.
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| Locked And Loaded (Bronze) | Purchase All Weapons From The Shop.
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| Never Get It Back (Bronze) | Watch The Alien Breed Prologue.
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| Ripley (Bronze) | Flame 1000 Aliens.
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| Roxanne (Bronze) | Kill 50 Aliens During A Countdown.
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| Run, Stone Run! (Bronze) | Complete Alien Breed Level 2 Without Firing Your Weapon.
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| Saving Ammo (Bronze) | Kill 2 Aliens With One Shot.
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| Scavenger (Bronze) | Collect Every Pickup On A Level.
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| Seconds Out (Bronze) | Reach An Exit Deck Lift With 1 Second Remaining.
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| Smashing (Bronze) | Die Together In The Mashers On Convergence Level 4.
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| Teamster (Bronze) | Score 17,171,717 Points Total Single Or Co-Op Play.
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| There's No I In Team (Bronze) | Complete A Level In Co-Op.
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| Tread Carefully (Bronze) | Complete Alien Breed Se Level 11 In Co-Op Without Tripping The Alarm.
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| Warming Up (Bronze) | Kill 100 Aliens.
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| Who's The Boss? (Bronze) | Defeat A Boss Without Firing The Assault Rifle.
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| You're Only Supposed To Blow The Bl**dy Doors Off (Bronze) | Complete A Level Using No Keys.
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