Here’s a guest-class for Modern Warfare 2 by xXStEeZyxScOpEsXx (not quite sure that’s his (her?) real name) featuring the Intervention sniper rifle.
Primary: Intervention + FMJ
Secondary: M93 Rafficas + Akimbo
Equipment: Throwing knife or claymore
Special grenade: Stun
Perk 1: Sleight of hand (Pro)
Perk 2: Stopping Power (Pro)
Perk 3: Steady Aim (Pro)
Use it like a quickscoping (shooting while you’re not fully aimed down sight) class or just a good hard-scoping (fully aimed down sight) class. Use your Rafficas when you’re in a close quarters or when you need a faster weapon.
MW2 Tactics comment: There’s not a long explanation for this class, but it doesn’t need that a lot. Might I add that Stopping Power can be useful: most of the time, the Intervention is a one shot kill. But not so much when you shoot someone in the stomach (damage to the stomach is 77). Stopping Power multiplies damage by 1.4 so that would make a shot to the stomach a one hit kill (77 * 1.4 = 108). The Intervention has great feel when shooting, which probably explains why it’s used so much.