Well, the game feels like a single level (that's pretty much unavoidable in order to be something you could finish in one minute), and the fact that the time limit is one minute is kind of arbitrary in the sense that it doesn't feel much different from a 90 second time limit or a 50 second one. So overall the impression I got was "It's a nice platformer, and it has a time limit"
In the introduction, Mark said something like "take something the player expects to have a lot of, and give them only one". In platformers, I don't typically expect to have "a lot of minutes" :P