I do quite like the initial level design. It's a pretty nice take at Pizza Tower (which I'm more familiar with than WL4) - pretty quirky game, all in all.
If possible more unique challenges would be neat - sped up sections which may require faster reaction times? Not sure, cool game tho
edit: i got dmed this to test it out - i may be wrong with this comment since its only initial so i may just not have seen other challenges ingame