Full list of all 50 Hitman HD Pack achievements worth 1,000 gamerscore. It takes around 25-30 hours to unlock all of the achievements on Xbox 360.
Contracts: A mission has been completed with precisely 47 kills
Contracts: All firearms collected and displayed in the training room
Contracts: You picked up the Gold Desert Eagle Dual
Contracts: You picked up the minigun
Contracts: You have found all melee weapons
Contracts: All assault rifles collected and displayed in the training room
Contracts: You killed the ghost
Contracts: You retrieved the SPAS-12 from the florist
Contracts: All shotguns collected and displayed in the training room
Contracts: You drowned someone
Contracts: All hand guns collected and displayed in the training room
Contracts: All heavy weapons collected and displayed in the training room
Contracts: All sniper rifles collected and displayed in the training room
Contracts: Completed normal difficulty
Contracts: Completed Expert difficulty
Contracts: Completed professional difficulty
Contracts: 5 Silent Assassin ratings awarded on Normal difficulty
Contracts: 5 Silent Assassin ratings awarded on Expert difficulty
Contracts: 5 Silent Assassin ratings awarded on Professional difficulty
Contracts: You used explosives on a victim
Contracts: You poisoned a victim
Contracts: An innocent person has been killed
Contracts: A Silent Assassin rating has been awarded
Contracts: You completed the first mission on any level
Contracts: A successful kill has been performed
Contracts: A successful headshot has been performed
Silent Assassin: A mission has been completed with precisely 47 kills
Silent Assassin: Killed 18 people using the golf club
Silent Assassin: All firearms collected and displayed in the Hideout
Silent Assassin: All melee weapons collected and displayed in the Hideout
Silent Assassin: All shotguns collected and displayed in the Hideout
Silent Assassin: Obtained a katana from a ninja
Silent Assassin: All hand guns collected and displayed in the Hideout
Silent Assassin: All assault rifles collected and displayed in the Hideout
Silent Assassin: Killed using all three knives: scalpel, kitchen and combat knife
Silent Assassin: Completed normal difficulty
Silent Assassin: Completed expert difficulty
Silent Assassin: All sniper rifles collected and displayed in the Hideout
Silent Assassin: Completed Professional difficulty
Silent Assassin: All heavy weapons collected and displayed in the Hideout
Silent Assassin: Killed using the fire axe
Silent Assassin: 5 Silent Assassin ratings awarded on Normal difficulty
Silent Assassin: 5 Silent Assassin ratings awarded on the Expert difficulty
Silent Assassin: 5 Silent Assassin ratings awarded on the Professional difficulty
Silent Assassin: A successful headshot has been performed
Silent Assassin: You completed the first mission on any difficulty level
Silent Assassin: A Silent Assassin rating has been awarded
Silent Assassin: A successful kill has been performed
Silent Assassin: An innocent person has been killed
Silent Assassin: Successfully used anesthetic