Seriously get like at least one fluent English-speaking person to proof-read the dialogue and cutscenes before you publish, they make no sense. The intro story is really flawed (with all the technology for the futuristic war machines you'd have thought they'd have mapped the whole world by then), but I think time spent improving it would have been better spent on other things.
The pathfinding AI seems ok but has issues sometimes.
The limit on how many units you can select is annoying, as you don't know which units are going to move and which won't.
Units often get left behind if they are not close enough to an enemy but the others are and they go off attacking the next enemies (could fix by having units decide to attack enemies even further away).
The artwork of the guy talking in the dialogue looks really weird, and the detail on some graphics seems wasted from the low resolution and shrunken size of the icons/units (e.g. all units are quite pixilated and you can't really tell much about them).
I had issues with deselecting units, like going from one unit to another just makes the unit go to the other unit.
Saying all this, I know a project this big can't be made to very high quality in a reasonable space of time, so I do appreciate it.