The game also offers mods which include hook or extra powers contained in runes. Graphics are great for that kind of time. The explosions are pretty good and the effects after u fire a rail gun are great too. Sound is not that great but is sufficient to this kind of game. Enemies moan, scream and splatter after being injured or killed.
Weapons make good sounds also.
Together, Quake II is a winning combination. When Quake II came out, the hype was just as much for the original. Banners, vague ads, the whole bit. And when it came out, it blew Quake straight out of the water. Even today, in the year 2000, Quake II is still used as an example of a great single player shooter game.