This is not a well made game, graphically or mechanically. However, this game does carry the spirit of a Hellboy miniseries.
I would not suggest buying a ps1 port copy of this game. Between it and a PC emulation, go with the emulation. The graphics constantly flicker in and out. Environment assets will disappear in certain camera angles. The controls (tank style) are very slow, and make aiming difficult.
I will say one thing that is in no footage on youtube: When you are finishing the asylum and end up in a cell on your way back, interact with the toilet in the cell for a surprise.