It was a solid game overall, 83/100 for me; there are some really cool missions, albeit minus the ''stealth'' mission trying to trap Big G. I Highly recommend it if you're an aliens fan or strat.
The combat for Miles was excellent. The story was good, though slightly short. (that's only the downside they charge total price for a game you can complete in less than 10 hours. 8.5/10 for me.