Unlockable How to Unlock Space Helmet Fire the Project X Weapon. Space Suit Complete the space walk on Elite difficulty.
Contributed By: Guard Master.
Achievement Description Value Battle-hardened Single player completed 25 Elite Unit Single player completed on Elite difficulty 25 Exterminator Killed 1000 aliens 20 Frag-master Killed 5 aliens with one Frag Grenade 30 Hidden Treasure Found all secret collectibles 10 Immobilised Stunned 5 aliens with one Stun Grenade 20 Meat Grinder Killed 250 aliens during multiplayer Survivor mode 10 More Speed, Less Haste 'Vengeance' completed in 17 minutes or less 10 Seasoned Squaddie Completed a level in multiplayer 20 Survivor Stayed alive for 8 minutes in Survivor mode 10 Tank Took 500 damage without dying 10 The Informed Picked up all the logs 10
Contributed By: R351D3NT3V1L4.
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