If you want to break the game, try abusing potions of restoration, then smith better alchemy gear, brewing even more ridiculous potions. do that 5 times, brew some enchantment potions, take some more restoration potions and you'll be able to pull of things like +10000% enchantment to anything. Do that with stamina, life reg, magic res, feather, damage and stealth and you have effectively broken the game. Now the fun part: Give that godlike equiment to one of your most liked companions. And then just watch them obliterate anything that stands in your way. Also works with reverse pickpocketing into NPCs. ^^
Edit: It can get boring because you'll never see an alive enemy again. If you don't want to break the game, don't go over +600% of anything. And set the difficulty to master.