21 years later, the original Halo's still a blast to play, and I'd say the original visuals and soundtrack more than hold up. I do think that the later levels in the campaign drag a bit due to level repetition and excess enemy spawn, and of course there's some classic early 2000s jank you'll have to deal with (such as the not amazing driving controls), but it's ultimately still an experience worth trying out. Highly recommend playing the campaign with a friend via co-op at the very least, it'll make the enemy grind in the later levels much more bearable.