Two years ago you had a mission, dealing with a whole plane full of weird freaky aliens who grabbed people, stuck tentacles wherever they could, and did weird kinky stuff. It was supposed to lead to all problems where people were getting turned into sex-crazed bimbos hyper-fertile bimbos mostly, but on the planet someone sent you to they'd all mutated and just stole people's DNA and turned into weird monster girls or something. Not even the really sexy kind, just you know, claws and acid and big weird mouths. They had kinda rockin' bods but the rest was too much of a turn-off. Anyway you're awesome, so you killed every single one of them... except then you found this egg and it had one of the regular non-mutated ones that did the nympho thing, and you know, that's hot, but it was a baby and you always work alone, so you brought it to some scientists to raise until it was fully mature and suggested they maybe use it to repopulate failing colony worlds.
Last week they contacted you, but it wasn't about suddenly having a planet full of needy sluts who needed a real man like you, it was to say some nasty alien raiders were trying to bust in and take it. You got there just too late to stop'em, and that really stuck in your craw because this was totally the same group you'd been dealing with when you first heard about the kinky aliens, so you were gonna have to infiltrate their base to get this weird critter back. On the upside, you had been there before, but getting around the place had required you to use some of the weirder features of your badass power armor. Whatever, you're Sam "USA" Ran, toughest badass these sorry creeps ever met. It was just kind of embarrassing.
See, problem was, you could barely get into the entrance to their base before you were blocked off by a solid barricade, and the only way past it you knew of was this tiny little vent. But it's like, this REALLY tiny vent, and even if you could squeeze your way in it wasn't a straight shot, it turned like crazy, so you'd need to like shrink down or have no bones like some kind of snake or something... but thanks to your armor, stuff like that wasn't necessarily off the table.
See, you got it from these like space crows forever ago. They were really into retroviruses or nanites or something, and they also really got around the galaxy, so if you knew where to look, damn near any planet out there had a bunch of their old vending machines lying around. They dispensed these capsule things. You can slot those into your armor, all modular style, and at the push of a button, they'd pump you and your suit full of... you know, space crow science goo, and it'd temporarily transform you in some way. You really tried not to rely on it, but it seemed like every mission you ever went on, if you found yourself at a total impasse, you could always find one of these vending machines near by and it'd help you out. It was just... always embarasing the stuff they did. That's why you always just tossed all the canisters after every mission.
Anyway, here you were. Little vent to one side, vending machine in an alcove to the other. You really had to just bite the bullet and pull a capsule here. At least it'd be temporary... of course the one you used last time you were here you needed to keep using. Whole place is full of these little damn tunnels and stuff.