Monster Hunter x Dynasty Warriors lol, though the later content in this game was poorly poorly implemented and it was clear they didn't scale them to ever be done by solo players. Unless you have a group of 4 with high level characters, completing this game is insanely hard going solo.
Got started on the DW franchise with this game and while I've heard this game is abhorrent among the community, the music is exceptional among the series and it got me into the franchise so I couldn't be any more thankful for it bringing me in. Thank you Koei!
Glad to see Battle for Bikini Bottom was getting a spin-off, but alas I think the hype for it got purple lamp confused that BfBB was a product of its time with lots of nostalgic value for fans and this game adds very little to the experience besides feeling like DLC foe BfBB.