With this build you will never need to worry about healing or flux as long as you are hitting your targets; this includes tough bosses like Nurgei and Belisarius that deal huge amounts of damage that you will be able to tank and survive (which is necessary for some trophy achievements). Invest most of your attribute points into Intelligence and Constitution. The build consists of getting these gear items, Perks, and Abilities.

GEAR:
-Tech-priest Helmet: automatic flux regen. Found in Ghost Town near the entrance mausoleums and grave sites
-Vermillion Staff, upgrade to the Blessed Crosier after defeating Belisarius for the best casting abilites
-Corrupted Cape is excellent 800% defense against all damage types
-Tech-priest Cape is a great starting cape found early for the added flux and flux leeching abilities
-Amulet of Flux Leech: Found this item after the Abhorrent Knight boss fight on a Mindbreaker technomancer
-Ring of Lifesteal is a must for health regen after every hit landed on your opponent

ABILITIES:
-Summon Elemental: Co-op with an NPC that destroys or distracts enemies around you with a percentage of your base damage.
-Fire Breath: Will damage and give you health regen on enemies and bosses, pairs with Debuff Mastery perk.

PERKS:
-Technomancer-Upgraded: Lowers enemy and boss defenses by 25%, add any upgrade you like.
-Debuff Mastery-Upgraded: Fire Breath and Decay status affects help health regen, damage and lower enemy armor percentage.
-Vampirism-Upgraded: Because why not have more lifesteal and plow everything down in your path.