Ok guys, just screenshotted the best setup to play the game with.

Once you beat Normal mode once start playing on Hard, hard mode increases the frequency of the "3 slap" by a lot.
Abnormal mode is stupid.
I would practice using Jean, because if you get grabbed you just hit E (attack) and you'll pop out of the grab, but Levi and Mikasa are better for advanced players IMO.
I'll start hosting servers if you all are interested.