super short and sweet except for two gripes. one major, one minor.
major gripe: why not allow us to use WASD for movement or at least up arrow for jumping? requiring arrow keys + mouse + space bar = three hands. i have three hands so i was able to manage it but most people only have two.
minor gripe: you should have to get both the wrench and hammer to the exit in order to finish a level. as it is, it feels awkward that i shut off water flow but never have to actually m ove the wrench past that point.