Awsome game, really loved the use of the requirement here, it is cool to be able to use your own weapon as a shield to suck up enemy bullets and then fire them back, it reminds me of something Ratchet and Clank would do. Not sure where the turn up the heat theme fits in though.
The art is really nice too, the lighting used also really adds to it too really well. The sound for picking up health cracked me up too.
Although it would have been cool to be able to use the coins to spend it on upgrades too maybe.