The gameplay is nice and original, but the lack controls customization is a bummer (I was playing on an AZERTY keyboard so switching to a QWERTY input made typing the mantras difficult). Apart from that, the mantras themselves work 2/3rd of the time for some reason. It's a shame, because I really like the concept and I'd love to see more of it!
Anyway, I wish you luck
-Loupyboy
EDIT: I also like the simple graphic style and the way the tutorial is set up with the healing 'coin' being right here after the first enemy! It really teaches you how to play without actually telling you everything, which is kinda cool.