Prioritize Agility ALWAYS.
Armor: equip blue armor that grants agility. Usually designated by the word Swift, Swiftness, Quickness or the like. Beware that items rank increases throughout the game (indicated by higher price) with despite their colored rarity. Also, armor attributes randomly give a innate bonus to either Stamina, Armor or Block. Meaning two Swift Pants may be the same rank and rarity while granting the same Agility, but one may have more Stamina and the other have more Block. The best is Stamina.
Best Weapon: Tesseract of Brutality (or any blue Tesseract with ONLY Doom (Deadly or Brutality). This is because Reinhart attacks MUCH more often than any other character by doing Damage Over Time or ticking. Thus, chance effects happen extremely frequently; especially critcals and doom as well as vampire or any other Chaos Effect. With critcals doing double damage and a Doom score > 200, Reinhart does absurd damage (about 1500/sec).
Accessories: Wear Doom granting Rings or Necklaces for more DPS or add Vampire for insane health regeneration. Adding Withering will decrease enemy armor by 20% which subsequently increases your damage by almost that much.
Most lethal stance: Entrophy (Lightning Strike in some boss fights.)
Using Empowered Geometry of Annihilation (Temporal Inversion proficiency maxed) and empowered Creative Destruction (Entropy's Shackles proficiency maxed) will provide infinite Power (with high agility and the Eureka Moment talent, perma-stun on all non boss mobs (via empowered Creative Destruction), and about 1500 DPS (by critical damage and doom. Empowered Geometry of Annihilation also stuns on first summon. Constantly use your absurd amounts of power to constantly have Healing Circle and Perpetual Momentum on. Spam Barrier shield for invincibility. Always have an illusion summon via Mirror Leap for more DPS, mob distraction and the added effect of amplified damage of the Dynamic Mastery Talent. Using normal Creative Destruction for when you need to gain those 2 Power Spheres needed to get the empowered version of Geometry of Annihilation and Creative Destruction up and providing vast Power. Don't be afraid to dodge or re-position yourself in battle. Use Lightning Strike on lone bosses, especially the final boss.
Pro Tip: You can master Creative Destruction extremely quickly by spamming the skill button without holding it down. As long as you press it and hear the spell sound effect, you have gained a use (need 200 for empowerment) and it will cost only 6-7 mana to activate. Build focus using Entropy stance's normal attack and spamming the activation of Creative Destruction. Work with electrocute too, but that is ultimately fruitless because the damage is much lower using electrocute.
-You should dedicate the beginning portion of the game to obtaining Empowered abilities; most importantly, Creative Destruction and Geometry of Annihilation.
My End Game Build
Proficiency (mostly, in order of leveling):
Lightning Strike (Max Power Surge)
Geometry of Annihilation (Max Temporal Inversion)
Circle of Healing (Max Vector Dampening)
Creative Destruction (Entropy's Shackles)
Perpetual Momentum (Max one or the other)
Barrier Field (Max Angle of Incidence (or the other if you like))
Dynamic Mastery (4 points)
Entropic Mastery (1 point (to allow Ruin and Restoration to proc)
Quick Thinking (Max) [ASAP]
Eureka Moment (Max) [ASAP]
Ruin and Restoration (Max)
Adept Spell Casting (Max)
Statistics at Level 28:
Reinhart (Entropy Stance)
Agility: 348 (435 while standing in Geometry of Annihilation with Temporal Inversion Proficiency maxed)
Attack DPS: 80
Ability DPS: 254
Crit %: 50.72% (63.40% while standing in Geometry of Annihilation with Temporal Inversion Proficiency maxed)
Greatest Crit: 3200+ with an empowered normal dynamic attack
Empowered Creative Destruction deals about 970 - 1200 damage, 3 times in 2 seconds in a large area around Reinhart. Stuns non-bosses for the entire duration. (spam-able and gains full power)
I will post screen shots and video when I have properly captured those. Cheers!
Edited by Doctor.Strange, 09 October 2011 - 12:28 AM.