Wake up, things are exploding !
You now have your mission !
Get all your weapons, you will need them
Survive the Alien ambush and continue your path
Escape the Pillar of Autumn
Escape the Pillar of Autumn without taking any health damage
Complete the first Level using only the Pistol (don't pick up other weapons or vehicle)
Defeat the new Alien type in Mission 2
Survive the oncoming Brute onslaught
Ride the Warthog
Go through the strange cave
Use the Sniper on the Right Side Cliff
Use the Sniper on the Left Side Map
Get airlifted out of Mission 2