I finished it a few day ago and chapter 6 was indeed terrible. In fact, I was starting to get bored with the game somewhere around mid point. The problem is that while fighting bosses is pretty fun because they make you utilize the entire combat system, fighting against trash mobs feels like a complete waste of time. The game does the soulslike thing where at any given moment you only fight against a couple of small enemies or 1 large enemy, but the enemies themselves are about as threatening as the most basic bitch mooks in a DMC game. There are a lot of different enemies in this game, but most of them are fought the same exact way. If it's a small mob, you just run up to them and mash your basic combo once and they die. If it's a bigger mob, you charge your heavy attack, run up to them, hit them with it and hit them a bit with your basic combo and they die. If it's an actually dangerous mob, the number of which in the game I can probably count on 1 hand, you actually have to use your spells, but they rarely make you fight more than 1 of then at a time, so you just charge your heavy attack, run up to them and hit them with it, paralyze them, combo them 2-3 times, use your spirit attack and they die.
Not to mention the levels themselves fail to provide you with any challenge you have to overcome or something you have to figure out. It's just a linear corridor you run through, encounter 2-3 small mobs or 1 bigger mob, kill them and continue running forward. There are precisely 2 places in the game where the level itself becomes an obstacle you have to overcome - the prison realm and avoiding the giant metal ball in chapter 5. The level design reminds me a lot of Nioh, but the levels in Nioh are actually fun to go through because every single enemy poses a threat and places where they bunch up actually make you think about which one to target first, which way to approach, etc. Wukong's levels do have one big advantage over Nioh's in that there are a lot of optional secret things you can find in them.
As for the combat, it's fun, but quite shallow and you only ever utilize its full potential when fighting bosses. My favorite part of the game were bosses that are programmed to counter your spells and other abilities and where you could actually come up with an idea how to counter the counter.
The combat actually reminds me a lot of another Chinese-themed game whose name starts with a W that I played recently - Wo Long:
-Both give you 1 basic combo you mash throughout the entire game
-Both have a heavy attack that becomes stronger when you fill out a bar by hitting with your light attacks
-Both rely on 1 central mechanic to avoid damage that also fills out your heavy attack bar
-Both have spells with very fast cast times you can use in the heat of battle, some of which can be used to supplement your main defensive option
-Both have a jump command that's nearly useless in combat
There are some stuff that Wukong has over Wo Long, like spirit skills and transformations, but on the other hand, Wo Long has different weapons, way more melee skills and spells, ranged combat and more build-making options.
What Wukong really excels at, other than bosses, is presentation. Everything looks very cool and flashy, main story bosses ooze personality (even if I often had no idea what the fuck they were talking about or what their goal was, maybe it makes more sense if you're familiar with Journey to the West), game looks great but also runs surprisingly well. But if you take all that away, the game is really not that good. Definitely not day 1 purchase material.
I really hope that the devs don't slack and improve the mechanics and moment to moment gameplay in their next game, but with all the patriotic chinamen giving Wukong perfect scores for being the first big budget AAA game to come out of their country that's not some dogshit mobile phone slop, I highly doubt they will. I think that Wukong isn't even the best 3D ARPG to come out of China.