I've beaten the game and plan to play it again. This is a simple, yet addicting and fun game. The boss fights are hard but entertaining none-the-less. The unique melee weapons kind of bother me but... meh, it works well and it makes it challenging.
I know you probably have gotten enough 'suggestions' on what you should do but I want to state these anyhow. I like the kill team aspect but it would be cool if you could, possibly for this one or another one, make a 'hard core' mode where you play as a single or a team of two. Of course you would have to change the stats and stuff to make it even possible. I got this idea because I loved it when I got a good set of armour that complemented melee fighting, my one character practically took down an entire room full of guys and managed to survive almost all their shots. I would simply play again and again as a lone figure beating the crap out of an enemy base because it would be challenging.
This game is a fantastic game and I plan on playing a few more times before I get sick of it. Hope to see more excellent work like this in the future. Take Care!