Yo! I personally don't mind switching play and quit, alot of games do it, but I think its an "easy" answer to how to make your game fit with the theme. Having the game lie about instructions is something too many people have already done.
Onwards to the game itself, I don't mind the graphics/audio, as it's your first game, so it's natural!
The only issues I had with the controls of the game is that jump is on Space, while movement is on the arrow keys, and I still need to use the mouse. It's not comfortable to move around with arrow keys and space, and then have actions on the mouse!
I do like blasting bunnies with fireballs, and I found the death effect for them hilarious xD So that's good!
This is good stuff for your first game, keep it up.