I found the game quite interesting, although it did felt a bit too fast paced for my taste on medium and especially hard difficulty. I managed to survive on every level but could not achieve a high score on anything but the easiest level.
Something I am not sure I understood very well was how the movement of my robot worked. Sometime it felt like I had to full press the key each time to move a square, and other time I saw it zoom across the map when holding the key down ( I cannot guarantee that this is not an issue with my repeating keys settings or my keyboard being faulty though :-/).