Really enjoyed this idea. I found the presentation and the polish awesome, but while actually playing was very hard to see some of the letters (especially w/the post processing FX - there was a glare or something on the letters). If they glowed, or were just larger, that might be easier. It was never clear how to make the shotgun work.
The oncoming bad guys were really chilling in their "Sorceror's Apprentice" relentlessness, but I'm thinking that's a plus. :)