Should i buy it?

I really enjoyed HITMAN 2, but never played the original. i enjoyed most missions in the 1st one, and really enjoyed the missions where you snipe people from far off buildings, as it just feels, well.. great! really good game and stuff, but when i saw my friend playing on H:C, it looked, well, wierd! he was on a level with a club andf loads of dead bodies and drugs n stuff, it was right out of BLADE! just wondering, is it a totally different game, or is there more of the stuff from H2 returned? basically, should i buy it??

BAZ - "Get down!!!"