The game is quite fun, but I confess I didn't quite understand where the invincible theme fits in... Well, good job.
On the game's page I explained a bit more about how it relates to the theme; I followed the idea of a vampires/megabonk-like game, but the character's defense is "invincible"—he can deflect all bullets as long as they are within his field of vision.
Oh, that makes sense... I didn't become invincible through Skill Issue, lol. Anyway, it's a great game, congratulations!
Oh, thank you so much, your game is amazing!!! It brought back so many memories for me, I'm looking to buy an Atari :S
