Tight shooting controls and the aiming was good. The player movement felt difficult and jumping especially was quite a challenge at times unfortunately. Quickly found the best bet was to jump while stationary and then move.
I made it to iteration 8 and started running into problems. Could never find the cube, but that could very well have been my fault, but after a few tries it seemed like one of the targets wasn't reloading. Again, could have been me just missing it but I swear for several runs one of the targets just wasn't there.
Still, little tighter character controller and this would come along nicely. Well done.