what does that mean, is there like an infinite score farm on shifu? also completely unrelated but is there any way to bind stuff on the spacebar

I'm stuck on the Stage 4. The best I could achieve was 50% of the last health bar of the boss, but that happened only a few times within dozens of retries. I was using machine gun and sword. I defeat the mini-boss first stage with sword, it's fast but I lose some HP there. The second stage of the mini-boss is not a problem for me. However, I find the final boss hard, as every hit I take results in severe damage, and I don't know how to attack & defence effectively there. Any advices on getting to boss with...

Might as well make this topic. But yes, do make sure any bugs that any of you find are placed here. Bonus points for being able to replicate the bugs and writing clearly (that helps us find them better).

Were there any old designs of Suguri (the girl, not the game) available online anywhere? I've noticed a design inconsistency (in this game, actually) and was curious. For context as to the nature of it (if the title doesn't give it away), I noticed that the first shots of Suguri in the opening has her leg shaded in a metallic colour as opposed to her socks'(?) normal dark grey (opening video, 0:02 & 0:41) and went on a rabbit-hole thinking that it was a prosthetic leg before realising it was probably just...

So far I've only 'found' one, but apparently this game has ingrained cheat codes. I say 'codes' because I assume there's one to unlock all guns somewhere, but I haven't found it. Has anyone else stumbled on this game's codes? So far the only thing I've found is Konami Code=Invincibility....