An underworld crime boss, Oni is now fighting on the side of good (or MAYHEM), which means you are now expected to know his abilities, his upgrades, and also expected to use him, and use him appropriately, in situations that demand it.
You can play the game and learn all of that through trial and error- or you can rely on us, because we are awesome, and in this guide, we cover all of his abilities and power anyway.
Fear the Demon: All surrounding enemies get struck by Panic; each kill extends the effect
Fear Tactic: Your attack is an automatic critical hit, and also inflicts Panic
Silenced Pistol: This is a silenced pistol
Kanabo Enhancement: Special ability power increase
Hitman: Increase weak point damage
Pure Demon: Increase aura expansion amount
Unnerving Advance: Increase special ability status effect duration
Smoke Screen: Instantly reload weapon
Unstoppable Force: Enhanced precision when slowing a target
Fearmonger: Killing Panicked enemies extends Panic duration in other enemies, driving the utility of Fear the Demon up.