I like these kinds of games, and this one isn't awful, but there's not enough variety to it. And my hand almost fell off before I was able to buy a better gun. =P
Good concept, but needs more work. The laser is a huge disappointment. Seems to be more of a 'taser' instead of a laser and has low ammo and a low rate of fire.
Autofire is great, but it would be nice to also have an autosummon on your units so that you could constantly summon them without having to wear out your hand pushing the key repeatedly.