- Wire, the best thing to use through wire would be lightning, as it would travel through it and make the wire and the kunai sharper and more lethal O_O
- You can attack pretty much anything, Tags which explode on impact, flashbombs to blind the enemy, smokebombs as a decoy, wire to trap the enemy.... for some reason i can't recall any other right now, but i bet there is more O_O
- About close combat, if I am only allowed to use a kunai in close combat. I would probably try to use it in a combo with some freeform tai, to end up having the enemy in an arm lock with the kunai slicing his throat somehow O_O
the lethal points: Lungs, Throat, Head, Stomach, Liver and Penis O_O