I remember being a kid playing this for the first time it was difficult as hell. Cheating was key or I'd die. Later on I rediscovered the game and realized that most missions are indeed too difficult and not so memorable - the best ones was remade in Hitman Contracts, though. However!! The first level and the last two levels - which essentially are the entire story - makes it epic. Give it a shot for some backstory and replay Blood Money.