The only way to do this is to create bullets around his leg area until he gets hit by one of them. Such a horrendous hack it is unbelievable (and lots of situations where it wouldn't work). Hits are managed by the game engine by hit location, but we, as scripters only have access to read or write the overall damage value (for infantry and vehicles). Well, we can check handsHit and canStand to see if arm or leg areas, respectively, have been damaged, but we can't even tell how much damage has been applied to those locations.