Fun game, even if it was built in 1993 but mainly bug free and runs on low end devices with ease.
Used gzdoom.

Great music style, I love the unique combat system catered to the music and the entire environment being in sync with the music.

Fun game with lots of open world missions, didn't get stale for me although the skill tree system was a little bad and made it hard to be highly overpowered.
A few mods needed here and there to make it a perfect game.