Just got started on Yakuza 4, I'm really enjoying it so far. I've been switching between it and my master ninja mode playthrough on NGS2. Finally killed that PITA Alexei. The fight's a lot tougher in a regular playthrough since I don't have my go-to weapons but I found a somewhat reliable trick to stun locking him. Momiji's chapter is absolutely horrendous. It probably has the second hardest opening gauntlet in the game.