Marathon's endgame is great. There's the intense PvPvE puzzling of Cryo Archive, including a boss fight against the Compiler for unique gear, and then there's Ranked, which gives you the chance to loot and shoot your way up the ladder.
While the endgame systems are expertly designed, it's been far from simple to access them so far, with both Cryo Archive and Ranked being weekend-only affairs, give or take a day or two. In other words, if you couldn't play on the weekend, you'd miss out. And even if you could, you'd have basically been forced to pick one or the other. On the one hand, it made sense since both modes inevitably saw you emptying out the vault you'd built up throughout the week. On the other hand, it's an awkward schedule.
