The easiest way to do this is in a local multiplayer match. So grab a buddy if you can otherwise you're going to have do it solo.

1. Have the player who wants the over 200 hit combo play as the following characters:

Cable w/Projectile Assist
BB Hood w/Projectile Assist
Anakaris w/Ground Type Assist

 The other player should pick 3 Blackheart's w/Launcher Assist

2. Build up your super meters to level 3.

3. Initiate Blackhearts triple hyper combo by pressing Assist A & Assist B simultaneously from across the screen

The Cable team should initiate at their triple hyper combo right after. The Cable team will get well over 200 hits just by letting the hyper combos do all the work.