occulus is in secrecy one of the most powerful champions once you reach lvl 15.
since he is one of the later demigods that came out not a lot of people played him that much or know about his true power.
I could write pages about occulus, but i'ma try to keep it short and simple, because there are so many different play styles you can do with him.
The safest and easiest way is to play occulus on mana side. zap the creeps once then go middle zap the creeps, and try to make the enemy miss his waves.
Favor item: Blood of the fallen. 800 hp free is just insanely good, especially on cataract with 15% increased hp flag. And so you can focus on getting mana items right of the bet
Items: monks, 550 mana helm, 1500 unbreakable boots, 1500 mana crown, 1500 chestplate, 1750 mana helm.
Late game bishops/high priests, if you can trust your teammates on locking portals get a 4000 orb of defiance and if you get focused a lot. If not 5500 mana helm crown and sell 550 mana helm.
-your jump can do double damage if you sit right on top of your enemy, and it is aoe!
-try to always have xp flag captured when you zap the creeps on mana side
-in the early stages of the game be not too aggressive and always have enough mana to jump out!
-once you're lvl 15 you can kill anyone with your exploding balls, if already summoned always resummon them when they are right next to the enemies.
- having an early sigil and teleport keeps you always on the safe side, just don't ever use them unless you really have to, just play like you don't have them
max his zap and double jump
get one point in his minotaur skill for more mana with monks.
then max straigt balls till lvl 13
at lvl 15 you can max your balls and zap
now good luck and rape everyone
a pro occulus cannot lose the game to giants, that's what makes him so much more dangerous.