Hitman: Contracts/Enemies

Hitman: Contracts has various enemies. Some are really easy to kill, others are difficult to kill. It should be noted that all enemies die instantly by a headshot.

S.W.A.T
Swat teams usually work together to take down Agent 47. Getting shot by multiple Swat officers will lower your health greatly. Even sometimes killing you if you get attacked by large groups. They communicate by radio and will alert other swat officers to your location if detected. If you remain undetected while in a swat disguise, the commander will suspect agent 47 is in a disguise.

They're very good at finding imposters. So disguising as a swat officer while walking in plain sight will get your cover blown. This doesen't apply to the easiest difficulty.

Swat officers can take a lot of damage before they die. The ones that carry shotguns are weaker.