NR, I could beat you with one grenade tied behind me.
Mortar shouldn't kill in one shot, the bomblets are spread too far apart. If you aim it strait in the air the wind will take it along with it whatever way it goes, at least my mortar is affected by wind.
Ninja ropes are your key to survival. How can they be evil, they let you use weapons while you're still on. It helps me out when I need to take out four or five worms when badly outnumbered.
You say homing missiles are hard to use but homing pigeons are not? Pigeons go in the direction you tell them to and are not really smart bombs. They will easily hit a part of the landscape that isn't very thick.
I don't care for the pigeon that much unless the area is pretty clear-it takes the shortest route to get to the point.