Thanks adfx that some useful comments to mull over there. I'll take a look at your submission in a bit, thanks for taking the time to play this.
Yeah I think you are bang on with enemies - they are the larger cubes that should wonder around and attack smaller ones but there needs to be a visual cue or some some of UI indicator maybe.
Lasers yeah I will take a look at see about refining, you can also drop a bomb with spacebar