Wired: But for that sort of player who enjoys playing through a game once to see the story and get the experience, Too Human will end long before its time and with not nearly enough payoff for all the story exposition. And it's an uneven 10 hours at best: Sometimes I had a great time mowing down enemies and racking up combos, but sometimes the gameplay just felt frustrating and/or repetitive.
Updates:
A playthrough only lasts 10 hours if you do a speed run as the article says, "If you're so inclined, you can slam through Too Human's campaign in a little more than 10 hours, and the story of cybernetically enhanced Norse gods ends with a cliffhanger."