He is incredibly well-made, and a very nice love-letter to the Yakuza series. He honestly trivializes most vanilla maps, but its fun to run through them so that isn't too bad.
My only complaint is it feels sort of bad to fight enemies with him, where most characters can one-shot certain enemies while keeping their movement going, Kiryu often requires multiple hits which stop his movement. I found myself running past any enemies that weren't directly in my path, and also one-shot able like the airborne mosquitos.
I imagine he sort of needs to play like this for his punch and kick combos to mean anything, but nevertheless I ran around more enemies with him than I usually do. The egg-lance guys in castle eggman take him ages to kill compared to a typical character, which is sort of disappointing.
This isn't true for bosses though, he wipes the floor with all of them. It is immensely funny to punch Fang repeatedly until he dies. Actually one of the most entertaining things I've ever experienced was just beating Fang to death. Absolute hilarity. Punching Brakk Eggman is similarly funny.
It also sort of makes me sad that using the upgraded heat mode doesn't play receive you. Oh well. Amazing mod regardless of these tiny nitpicks. I really liked seeing Majima do knife twirls through the special stages.
Kidding aside, it's not a joke mod. I just really like Yakuza lmao