Heretic 2 is a completely different game from Heretic or the Hexen games. Instead of being a fantasy FPS, this is a 3rd person action game with a focus on platforming, melee combat mixed in with spells. It was built on a modified version of the Quake 2 engine, so it has the same blockiness in the models as any 3D game from that era. I can certainly overlook that and for what it had to work with there is pretty good art direction at least. The controls are harder to overlook, the default controls are awkward. They can be remapped but it's never going to control as smoothly as a more modern game. But you can get used to it. If you do it is a fun 3rd person action adventure game in a dark fantasy world. There is no full source port available (yet, the complete source code was never released and portions are believed to have been lost, but there is a reverse engineering project to rebuild the missing parts.) so getting it to run on modern hardware is finicky. But there are guides on how to do it and custom .dlls that can enable more modern resolutions. But if you have an old disc copy or a lack of qualms about whether abandonware should be a thing or not it can still be a good time.