Mission Types:

Assassination	Permanently kill a single target.
Counter -	Thwart a group or individual attempting a different sort of mission.
Heavy Assault	Defeat a range of adversaries and static defenses.
Incapacitation	Pacify a single target, using deadly force if necessary.
Infiltration	Achieve an objective without being noticed.
Intrusion	Get in, achieve an objective, and get out. Stealth is optional but useful.
Investigative	Requires detective work.
Pursuit	Requires speed, tracking, and/or ranged attacks abilities.
Reconnaissance	Check out a site in preparation for a future mission.
Retrieval	Bring a target back to base alive; against the target's will if necessary.
Squad combat	Defeat another small group in direct combat.