Thanks for the comment (and bugs report!), we are going to be working on the visual and audio feedback for the next version. There is no "move" for the player, but you do push the tile your on. We'll try to make more devious levels too!
Wow! An Update with more levels. :) there is small graphical glitch. steps to recreate: lv 12 left left down up or lv15 up and wait. I really like graphics but shooting sound is not that good. I was little confused with robots in water. I enjoyed the challanges. Have a great day.