Hitman: Codename 47 is one of the best games I've ever played. I loved everything about this game. The storyline was excellent, as was the level design. Also, there were many costumes you could steal, complete freedom!
The graphics were a little too blocky for my liking. They could have improved them a bit, since this game was released in 2000. Also, the engine was not optimised enough, and sometimes, you couldnt talk to mission critical characters. Other than these little gripes, great game!
The Bottom Line
Buy and play this game. It's only $20. Then buy Hitman 2!