Hammy speedrun with Sofia and underated characters - Octopath Traveler: Champions of the Continent 

This video is showing how ridiculous her 100% critical chances passive, you just need 16 buffs to do so.
Yes, I didn't use limited for damage or support, just Sonia as shield breaker. So basically, you can do this as F2P.
Hammy have two fixed actions, but sometimes the RNG is based on your damages.
And I hate to keep recording to get good RNG, sometimes I can do 10 turns up to 15 turns with same teams.
Btw she can strike 99999 critical damages to Hammy or Peter (Hammy's team swordsman) without single BP when they break with single damage wind.