I did a no-aug run while at the same time maximizing praxis gain. Having become quite experienced at stealth, it actually wasn't that hard, except Fedorova. Especially since I had been selling all my weapons, ammo, and upgrades, and had no upgraded weapons, I really struggled, but eventually got her down. EMP mines helped. Barrett is actually pretty easy if you throw gas containers at him. Jaron is rediculously easy; just wait for him to jump over a wall...
That's right: infiltrate and evade -- engage only on your own terms.
By the way, did you see what happened to the soldier we sent into the statue? He turned up unconscious.
"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram