Here's a mini guide I did in the way-back-when days...
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Jaguar help file: 10-25-94 (Tim Patrick, Kailua/Hawaii)
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The shortest way through the AvP MARINE game!
It's possible to complete the MARINE scenario with only the level-6 and 10 security cards. Not easy... but possible. This is not a complete "walk through," but it does outline the steps needed to do it. I have finished the game in a single sitting, WITHOUT SAVING, in under 2 hours.
Ready? Okay...
Go through AIRDUCT-4B (from the "food" room in the Barracks) to the level-4 Training Maze, and then through AIRDUCT-4C to the level-4 MEDLAB to get the LEVEL-6 SECURITY CARD. There is also a Pulse-Rifle to be found a little north and west of the exit from airduct-4B, "Bug Soup!"
If you didn't get the Pulse-Rifle in the Training Maze, stop by the ARMORY and get it, then go to the PREDATOR SHIP on level-1 and get the SMART GUN, "Rock And Roll!"
Go to level-5 and get the MOTION TRACKER, "Run But You Can't Hide!" Then go to the ALIEN SHIP and find the Queen Alien, the LEVEL-10 SECURITY CARD is at the back of the Queen's egg room. By the way... you don't have any smart gun ammo, but there's some to be found on the Alien ship.
With the level-10 card you can go to the MEDLAB and restore your health to 100%, then go to the Armory and get the FLAME THROWER, "I'll Tell Ya About Killin'!" Also, LOAD-UP on ammo!
And last but not least, you can go to the COMMAND CENTER on level-2 and set the SELF DESTRUCT!
5... 4... 3... 2... 1... BOOM!!
Finishing the game with only two security cards is difficult. You tend to run out of ammo before reaching the medlab. To make life a little easier on yourself, get the #1 card and go through airduct 3C from the kitchen to find the pulse-rifle, that'll give you a little more fire-power. (Or if you really want to do it with just 2 cards you could just go to level-1 and make a mad dash to the room north of the elevator. There's a pulse-rifle there, and you don't need a card to get in.) Also, when you go to level-1 to get the smart gun, get the level-7 security card from the room south of the elevator and stop by the armory to get the flame thrower on your way to the alien ship. Or, you could get the level-9 security card from the Predator ship and load up the smart gun while you're getting the flame thrower. This should allow you to finish the game in one sitting, without saving.
Yes, there really is a PULSE-RIFLE on level-3. Airduct-3C (in the Kitchen) leads into a small room that opens to a small hallway on the back side of a "jammed" door, and another room with a dead body at the door. Walk over the body. There's another one on level-1 in the room north of the elevator, and yet another one in the level-4 Training Maze south, south and west of the east elevator (near the armory). These can all be reached with no more than a level ONE security card clearance.
Aloha, from the Happy Hacker
<><><>< Alien inside ><><><>
Edited by GeekGod, Fri Jan 11, 2008 6:11 AM.