Definite bans

Frost Neko Save (after landing)
Wall Glitch
Anything involving Rope Poles (aside from intended use)
Weapon Overcharge
Equipment Trashing
Blat Glitch (money)
Charge Buffering and Retention
Joch Barrier Skip
Pure Lands Skip
Infinite Mana Sword
Guard Skips
Magic rope into cutscene
Mana Sword cutscene skip
Remote talking

No ban

Quick cast after MP/HP restore
Damage canceling

Still don't know for sure

2 controllers