Revisiting and catching up with old friends that you made throughtout the previous games will always be the silver lining of this otherwise mess of a game.
I like how creative the camera work is in this one compared to the following installments; that and the prevalence of distorted metallic objects in its depiction of the Otherworld have always made this the most visually stimulating SH after probably 3.
Meaty but braindead combat, stealth is just pressing triangle a bunch of times, story sucks, etc. Kinda speak volumes of how good presentation and proper pacing can get you through a game.
The lack of vertical aiming makes movement more vital than accuracy. Gunning down hordes of demons feels like participating in some macabre dance around enemies; up until you zone out completely and let muscle memory do the rest. That's Doom for me.
The speed of it all plus the combination of beautiful sprite work in the character design and charming early polygonal models in the background make for one alluring as hell fighting game. Impossible to take your eyes off the screen.