1.]  While you were taking down Dr. Krieger's operations, there was an island you missed. This is that island and here are your objectives:

  One. Kill all the scientists so they can't create and more trigens. The scientists usually hang out in the larger structures, where they'll be doing research. Interrupt their research.

  Two. Kill the sniper in the second tower and get the blue keycard. You'll need this card to enter the fortified base that holds the communications building.

  Three. On the top floor of the communications building is the red keycard. Use it to gain access to trigen island where you need to kill all the trigen.

Okay, now pickup the supplies to your left and get down to the raft, it's right on the shore below you. Use the raft and go straight into the lagoon-shaped beach. A short path to the right will lead you to the Armory, and your first objective.

2.]  Okay, that's two whitecoats down. Now get outside and head on down the path, where the second sniper tower is. Kill the sniper and get his blue keycard.

3.] Good shots, Jack. Now you have access to the fortified base which holds the communications building. The fortified base is on the tail end of the island, at the end of the path. Keep moving and take whatever supplies you can find inside the huts along the way. You need this last card to gain access to trigen island, where you'll have your final objective.

4.] Ready for some more action Jack? Good. Retrace your steps back to the Armory where you'll get your last mission objective. Be wary of incoming patrols coming to re-enforce the positions you cleared out.

5.] Found it eh? Great sense of direction Jack! Okey dokey, down by the water there is a pier. If you stand on the pier you'll see two islands across from it. The one on the left has a sniper in a tower, but the island is a small resupply full of weapons and armor. The island next to it, on the right, is Trigen island. If you need to restock on the left island you can, if not, use the keycard you just got to open the door to trigen island.

6.] Last chance to back out, Jack. Hah, just kidding. Get to the other side of the island, making sure to take out all the trigen. If I'm not mistaken, the place is full of the bastards but luckily for you there was a small mercenary encampment above the swamp, some ammo and armor is probably there if you take too much damage.