Hitman :BM is a strong shooter that follows the footsteps of Splinter Cell, but with more unique scenarios.

In Hitman: Blood Money, you play as Agent 47 in thee midst of mass Agent assassinations. You must carry out your job but must remember, you're always being targeted too.
There are very imaginative scenarios in the campaign, including a suburban assassination, Mardi Gras, and a huge party.
There are several ways to complete each scenario, and you earn more money, the better rating you get. If you kill everyone possible, you're gonna earn a 'terrorist' rating.
In between missions, you manage your gun and ammo stock, and can return to the hideout to test and practice with your purchased weaponry.
This game is definitely worth a rent, because it takes less than twenty hours to complete the campaign.