I love everything about this! The retro style, the different enemies and their quirks, the fact it revolves around coffee. Jeez, this is an addictive substance, just like its namesake.
The gameplay is easy to pick up, the difficulty ramps up nicely depending on the level you choose and there's a whole tonne of replayability.
I think you're onto an absolute winner here, and even though I only got to a certain level and not a whole load of points, if you added a wee bit more , that plot could make people keep going and going to get to some kind of ending!
Whatever you decide to do, I had a blast playing this, and I implore you to keep up the awesome work! =)