Dang, that awesome! I was hooked in immediately by the graphics, sound design and general concept. I couldn't stop playing until I beat it. The difficulty level and game length was just perfect! Short, sweet and fair. I loved the extra love and care that went into it (such as the statue of the huge skeleton holding a massive gun, the ending screen, glowing aura around the diamonds, etc). I have no idea how all of you created all these audio and graphical assets in such a short time, that's fucking insane.
As an audio guy, just wanna say how much I loved how the first gun plays notes from an E blues and E dorian scale. What a cool touch.