Rampage just kinda trivializes this fight so I had to ban it. That said, this isn't exactly a fun fight because Omega has only like 5 different attacks, but all the defence in the world, so you're more likely to die of boredom than anything else. The only hard to dodge move is the missile barrage in the last phase that requires some pretty thight perfect barrier blocks and rolls.
Build: imgur.com/a/TS...
Food: Equalizer