Stabilize the Nuclear Reactor.
Overload the Nuclear Reactor.
Enter the Power Plant.
Make it to the Sierra laboratory.
Get to the surface of the Great Sitkin Island.
Defeat an Allosaurus. (Single Player)
Restore the sub-level power.
Defeat Titanoboa. (Single Player)
You have escaped the lower sub-level of Sierra.
Meet Utahraptor. (Single Player)
Land of the blind no more!
Start your day at the Sierra Research Institute.
Make a last stand with the other survivors.
Hunt down the prized gold raptor. (COOP Missions)
Beat the game on the hardest setting.
Beat the game on hard, and get an S rank.
Snap a neck.
Get to know some of the scientist.
Defeat the Queen bug.
Take down the radio towers to cut off the enemy. (COOP Missions)
Collect the red file from the enemy camp. (COOP Missions)
Find the gravity grenade, "Black Hole" gun.
Unleash bugs onto the soldiers.
Destroy the enemy convoy. (COOP Mission)
Complete 10 Waves in multiplayer.
Complete 30 Waves in multiplayer.
Complete 50 Waves in multiplayer.
Get the Focus Beam.
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