The graphical style and audio are nice. The intro is well made, but you cannot skip it when restarting.
Mixing genres can work and I guess it works here too. If only the genres were not match-3 and tower defense...*I don't especially like either!*
Having to keep tabs on both the enemy advance and the resource icons is challenging to say the least. The power tends to run out pretty fast though so there is not a lot of time to concentrate on the tower defense side of things.
The match-3 part would be easier interface-wise if the different icons also had different colors. Currently trying to quickly match the icons I need is rather grating due to their similar look. Of course this wouldn't fit the style, but playability should trump style any day of the week.
Ok job in all. You should give out more ratings so that people can find your entry.
Good work , it's work and is fun !