I'm not sure if my stats/gear are good or bad for my current level, probably somewhere in the middle.
Really the only advantage I have to my gear is my att. speed % (1.80 attacks per second) and a little bit of life on hit and some life regen after a kill.
I am also using the Enchantress for even more attack speed, plus a extra (albeit minimal) CC.
Here is the build I've been using since the middle of Act 1, and it has worked wonders well into act 2.
A couple of notes/variations:
-Scattered blows could be replaced with Crippling wave w/ the Concussion rune for extra damage reduction from enemies.
-Breath of Heaven w/ Blazing wrath could be replaced with "Circle of Life" if you prefer a burst heal vs a bit of extra Dps.
-If you are still having problems surviving, try exchanging the Mantra of Conviction with Mantra of Healing w/ Sustanance, don't forget that on activation of a Mantra it gives you a bonus, and it basically turns the Mantra into a pocket heal that can be spammed so long as you have the Spirit, and feel free to grab the Templar for the extra regen, every little bit helps. ^_^
-For bosses, you can achieve much better DPS if you switch out Deadly Reach/Crippling wave with Fists of Thunder w/ Lightning flash or Way of the Hundred Fists w/ Fists of Fury.
-The only real tip I can give you for combat is to utilize Dashing Strike to assassinate the long-range nukers/snipers, but be careful, atm, Dashing Strike is buggy. I've had it stop at a target in the line of sight, or completely whiff a target.
-A final note, up until about 10 minutes before posting this I didn't die once throughout act 2 until I ran into a giant group of skeletons with Fire Construct, and an Elite Archer with Illusion and Fear. My only advice there, switch out Beacon of Ytar with Pacifism.
That's about it, I hope this helps anyone who is having issues with Nightmare. Leave any questions below, or if you find any other variations that you find that you think would improve upon the build, feel free to leave those comments.
Just remember, Inferno isn't the only difficulty people need help with.