Snipe

From Wormhole Sci-Fi MUD Homepage

Snipe is a skill that allows you to fire certain (sniping) weapons into an adjacent room. You can only snipe a target once, after which if they are still alive, they take cover. It can be a useful, risk-free way to get a few hitpoints off your target, though.

Consider following it up with a grenade attack!

>snipe <mob/player name> <direction>

See also: Spy