An absolutely massive upgrade to the first Halo in every way. More guns (though imo, less good ones), more missions, a way better story, a banging soundtrack and most importantly, way better level designs. There are less (but not none) copied and pasted rooms and more uniquely designed rooms, each bringing their own atmosphere with them (provided you played with the OG graphics, because the new ones ruin it).

Though I said the story was good, I hate how its delivered. A lot of important details are left in secret terminals, so I was not able to experience everything unfortunately. In addition, the story is left on a massive cliffhanger, so while I'm excited to see what Halo 3 has to offer, it sucks that the story ended where I was super engaged.