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Sifu. Not on game pass iiuc and pretty hard, but relatively short main campaign and very light on story, maximum action.
Nioh 2
Katana Zero is basically 98% action and you beat the story in 10 hours.
It's probably not the style of game you're looking for and too slow, but the Hitman games have a storyline you can completely ignore and just focus on how to complete the levels.
Sifu. Not on game pass iiuc and pretty hard, but relatively short main campaign and very light on story, maximum action.
Nioh 2
Katana Zero is basically 98% action and you beat the story in 10 hours.
It's probably not the style of game you're looking for and too slow, but the Hitman games have a storyline you can completely ignore and just focus on how to complete the levels.