Axiomatic truth: give me little guys that are hard or unusual to control and I will give you a good review. Co-op is a natural extension of the chaos, forcing not only precision with your steps and grabs and lever pulls, but a coherent rhythm from both players.

Biped gets a lot of grief for its length, but I think it's fine to leave a nontraditional experience before it wears its welcome; what I jive less with is the lack of room to breathe and just play with the weird bodies you inhabit. Instead, the Biped equivalent of fidget spinners dot the landscape, hoping to distract you just long enough to mentally realign you back to the main objective. These impulses become obligatory, eventually more of a distraction, where a grander sense of imagination and whimsicality and freedom could have both soothed players after tough challenges and given them room to develop mastery of the bipedal movement.

Oh well, they can't all be Snake Pass, I guess.