Ranged Stealth Mage
http://www.ign.com/builds/the-elder-scrolls-5-skyrim?d=00000000000000000010111011111111211100000011111002100111001110101100021010101000005000111001000010000000000000000000000000000000000000000000000000000000000511110511111000110010011105
Race: High elf or breton for min max, any race will do
Weapon: no weapon besides magic
Armor: Fully upgraded and enchanted dragonscale armor
Playstyle: Fling silent ice spears from the shadows, summon icy behemoths to fight for you, bend the wills of lesser mortals, or simply sneak by your foes, endless tactical possibilities.
"Illusionist" stealth mage
(have used this one myself, its very powerful)
http://www.ign.com/builds/the-elder-scrolls-5-skyrim?d=000000000000000000111110111111110000000111110000000000000000000000000000000000000050000100010000100000000000000000000000000000050110003215111123000000000005111115111111101100100111
Race: High elf
Weapons: Bound bow and duel wield bound swords as the situation demands
Armor: Nightingale armor, not even just for looks, the enchantments help a great deal with this playstyle
Playstyle: Weaving magic into weapons and twisting the minds of his foes is just another day for this adventurer. Able to change combat style to suit any situation.
Pyromancer
http://www.ign.com/builds/the-elder-scrolls-5-skyrim?d=000000000000000000000000000000012111100111111112100001110011101011000210000000000050001110010000111115111111150000111153100010000000000000000000000000000000000000000000001100100111
Race: Nord for awesomeness, dark elf, high elf, or breton for min/max
Weapons: Elemental fire and a bound battle axe if needed
Armor: Enchanted Daedric armor
Playstyle: Watch the world burn behind your exceptionaly armored form. Shrug off the blows of lesser creatures and , if the situation demands it, smite them with an axe of blue hot flames!!!!!