Sniper Elite 4/5 are my favorite stealth game. Huge maps with a lot of ways to approach combat, the way they use noise works really well, and who doesn't like exploding a grenade on someone's chest into a truck engine to disable that too?

Hitman (I honestly have no clue what they're calling it now; it was 3 when I bought it) also has a passable rogue-lite mode now. The missions don't have the same hand crafted polish as the real missions, but you start light and earn your way up to gear, with varied challenges to unlock currency, and potentially alert future targets on future maps if you're sloppy. If you like stealth, hitman's brand is a little different, but it's solid overall.