It's really easy. Spoiler! --Click here to view--Tranq the first two frogs that are in the area you start out at, then climb up the ladder to the right. Climb across on the bar (you're hanging while shimmying) then drop down..and spam triangle so you grab the ledge. Repeat. Then drop to the ground off the last one and immediately lay low and let your camo adjust (make sure you have the octocamo face mask on too). Crawl to the next ladder, climb up, go to the end, climb down the ladder, same thing. Then, stick to the right side and you'll see some boxes with a small opening you can get through. Go through that, lay flat and then crawl up to where you can pop all the frogs with tranqs. Then, crawl up past them, staying to the right side and you'll see the door in the center where the geckos are. Wait for them to turn their backs and walk off, then run up to the door, spam triangle till it opens and run through. Easy as pie. I did it the first time on the boss extreme with no alerts like that. Also, you're going to hate life in act 5 if you have no rations. I would try holding up a frog very carefully (if you get an alert you're !@#$%^&*ed) and see if you can get a couple rations that way. The frogs never stop spawning so there's no point in trying to run and gun them. You'll just die. As for your spoilers.. Spoiler! --Click here to view--It's the metal gear universe. All the cyborg ninjas have been over the top. Even Grey Fox did some crazy !@#$%^&*. That scene was pretty moving how he was tumbling into the water as the conversation where him and rose reminisce about the first time they met plays in the background. Also, the first time Spoiler! --Click here to view--I fought vamp I !@#$%^&*ed up too and use most of my rations. I just ended up restarting the fight since I had saved before it and didn't even use 1 ration cause I had figured out how to do it. Pro tip: Certain ipod songs will help you rejuvenate health at a much faster pace when you're crouched or prone and not moving. That's a good way to get through a fight if you have no rations.