Very polished for a first jam! You seem to have the principles of gradual escalation, challenge & reward down.
Great audio, especially the music and the voiceover. They really set the mood.
I don't think much more should be added to a WarioWare-style game like this, but of course I can think of various challenges such as a bug that flies in your face and makes the camera shake, or fingers twitching after too much inactivity.