That's weird, the version I have doesn't have advanced rules. It's labeled second edition, so maybe that has something to do with it? But there are solo rules, in which you fight a boss card, and multiplayer rules in which everyone tries to find and kill each other's alpha. If there's more than one alpha remaining by the time extinction arrives, everyone transitions to a "battle royale": a sort of streamlined last-dino-standing endgame.
I've only tried solo, but the multiplayer seems specifically focused on direct competition and attacks. Some of the cards even have special powers like "ha, put a wound in everyone else's deck!" I may be paraphrasing.
Plus, the first-player marker is a big plastic dinosaur that would totally eat any of those toy X-Wing models!
Not stealth at all! Arctic Scavengers is my go-to deck-builder for any player count of three or up. The pictures might be bland, but that might be because they're going for the aesthetic of post-apocalyptic survivors in a harsh winter. I guess there are only so many ways to draw people bundled up for cold weather. :)
One of the things I really like about it is that it has three distinct ways to get distinct kinds of cards. 1) Scavenge through the ruins for tools and medicine and maybe weapons, 2) feed people to recruit advanced survivors, and 3) fight the other players for rare gadgets and assets. Different kinds of cards, different ways to get them, and all plugged neatly into the deck-building system. It's also very interactive because you're always planning for a battle that will happen after everyone has taken a turn. You're all fighting over a card that only one player has seen, and it might be awesome or just middling. So there's an element of bluffing in terms of how hard the guy who saw the card seems to be fighting.
The re-release -- it's actually a pretty old game, I think -- includes a bunch of modular add-ons, and in the last few years, it got another add-on called, uh, Recon Something or Spy Something that gives it even more options by adding cards to build out whatever set you use in any given game, a la Dominions.
Some of the modules add faction asymmetry, buildings that give you more card management options, and different scoring objectives to encourage different kinds of deck builds. I think it's my favorite deck-builder for any situation with more than two people (it pretty much requires at least three players).