I like the concept! I found it really hard to find my target. I think there are possibly too many combinations of symbols. I think if you had one more distinguishing factor it would be much easier to find the target. For example, if I were looking for someone with a certain body type first (tall, short, skinny, etc), then mask shape, then symbol (and there be only 1 or 2) then I think it would be easier to narrow down the target and still be really fun.
The most effective strategy was to kill everyone. lol.
Still, I like the game and had fun (: well done!