Kingdom Hearts III (PS4) - Final Titan Fights No Damage CM LV1/All Pro Codes Restrictions

The Ice Titan & Lava Titan aren't terribly hard as long you stay in the air.

The Tornado Titan is harder. His worst attack is probably his icicle attack.
When the Tornado Titan pushes you back, it doesn't deal any damage.

Restrictions:

Critical Mode
Level 1
Kingdom Key
No Damage
No Armor
No Accessories
No Magic use from Sora except for Last Charge
No Airstep
Must do both parts consecutively
Must have all Pro Codes Enabled