I’ve been playing Deus Ex: Human Revolution pretty much non-stop since it came out and for all the boss fights I have one word: Typhoon. That augment will help you out immensely for the boss fights, it’s worth the Praxis investment even if you are doing a stealth game and not killing anyone.
I’m currently working on trying to get the Foxiest of the Hounds and Pacifist achievements in Deus Ex and occasionally putting in a bit of time on Dead Island, which so far hasn’t quite lived up to my expectations but Deus Ex totally blew my expecatations out of the water. I’m now on my 8th playthrough and really don’t know when I will quit playing this game especially with the first DLC coming out next month. I’ve already put in more playtime with this game than I have ME2 which has really surprised me.