Played the demo, loved it, and bought the full game.
It has a nice and very challenging risk and reward system because contrary to most arena shooters you're constantly forced to decide whether to blast or recruit. Between levels you see your army of killerbots lined up, blinking, and making weird r2d2 style noises -very rewarding
The slightly eerie ambient tracks are pretty cool too.
Definitely worth the money.
Btw, since the original Paradroid is quite different I really wouldn't call this a clone...more like an arcade style remake.