I wanna kill the 2doku
Sorry, Piece, this game isn't worse than the first Sudoku. The first Sudoku has ｱ, and the two screens that Sudoku took from that game make it worse than anything you threw at us here. That not to mention the F stage, it's far more annoying than this game's M stage (Which isn't annoying, actually, and it's even funny, it's way more of a M stage than the ones in the Kamilia series).
This game brings a quite decent difficulty balance. There are some screens that feel out of place, but overall you know that the further you progress, the more cruel the game will get. Screens such as Crazy Crazy Crazy and I Wanner just hurt my pancreas, and the fangame makers' themed stage is just...Urgh. The whole game brings a bunch of irony, referencing memes, fangame jokes and things that don't even make sense at all. The boss rush is probably my favorite part in the game, the only boss I might think of changing is Donald 2's because...Urgh. Straigh Outa Compton's boss didn't glitch with me this time, although I'm not completely sure if the glitch was fixed at all, KSD's boss is really enjoyable when you get a HP bar (It actually scared me for a few seconds, because I didn't notice the HP bar, but this game is surprisingly soft when it has to be. Thanks for allowing the players to get through), and Shake is RNG, and I love RNG. They're all joke bosses, but enjoyable joke bosses (Well, I enjoyed them. Not that it means too much, to be honest).
The only thing I found to be really unfair was Leehee's Miku (Clicking the title card to get past it. Really?), but other than that, everything was doable, to a certain point. Basically, this game is quite a bit what I expected the first Sudoku to be. It's not really great, but most of the unfairness and lack of organization was fixed, there are more jokes and some extra things. In other words, it doesn't score 0 on gameplay. If you, for some reason, like to hunt special (Or just bad) fangames, this is a good way to find plenty of them, while getting some early taste of what is about to come. Would only recommend to a very specific group of fangame players (People who are used to the worst things in fangames, and for some reason like them).
This is not one of those games.