Invisible Inc. is kicking my ass, the roguelike structure is merciless. I have been humbled back to Beginner (but still Ironman : No undo and no level retries). Guard patrols are shorter and I guess the game throws less firewalls and daemons at you.
I have a good play going now, found a third member to the party, everyone has good weapons (ranged & armor piercing), somewhat pertinent augments have popped up and I found a cloaking rig. So the game is probably gonna murder me with some terrible RNG layout soon.
I stand by my opinion it's the best stealth I've had in a videogame, over MGS, SC or Tenchu.