Game
I may be biased because I played this on ps2 in my childhood, but I believe it is an excellent game. It is funny, it has many interesting easter eggs, its gameplay is superb and super satisfying. I always enjoyed playing and still do.
Port
That being said, the specific port is making it difficult for me to fully enjoy. First of all, it seems to be riddled with bugs. For me at least. I could not get the game to work properly as-is, as I had two issues.
First, an issue with very small frame rates, which, if you check the forum page, is experienced by many others. It has a known fix, but still.
The second issue was even more cryptic (and mildly amusing, as a matter of fact). All movement buttons were not working, for example the jump button. It did not work as-is. It did not work if remapped. It DID work as a menu button; but not in the actual game. The solution to this I found from a thread in the Steam forum of the game, and it was, to my amusement, to install a Japanese keyboard and change to this when I want to play the game.
Pretty major inconveniences, if you ask me.
But even having surpassed those, I feel the game is lacking to its predecessor. They have added collectibles, fast travel and other shiny stuff, but I think the feel of the game has been lost a bit.
From some animations that were cut (the animation with the flames when you hit romans repeatedly is the most annoying loss for me), to changes in the HUD icons I did not like, to the fact that you cannot have different saves, I think the developer should have put more effort in retaining what made the game so enjoyable, and perhaps added in a few quality-of-life new things, rather than simply adding stuff that are standard in many games nowadays (e.g. collectibles).
All in all, still an enjoyable game, but I very much prefer the original over the port, I think the difference in quality is apparent.