When I was playing SH2 I got the melee trophy by doing the same thing shooting at enemies until they drop then stomp on them. I'm just not sure if it'll work on 3 because I dont want to play all over again if it didnt happen.
Ah, ok. Well, it could work in that case, and now I'm leaning toward the idea that it probably will.
When I try to unlock the beam saber I usually just fight everything with the pipe or mace or whatever to also attempt to get damage points for the possessed ending at the same time, if I recall correctly, so I haven't specifically tried with a lot of kicking them to finish them off. Been a while since I beat SH3 though.