I can do it Trophy

There are 5 weapons in total and 4 of them can kill in the sense that they can knock the opponent off-track. No weapon can kill an enemy directly. The slime is the only one that can't be used to kill, it is used instead to slow down the opposition. For this trophy you'll need to kill with the saw, missile, autogun and soundwave. While there is no way to track individual weapon kills, it is extremely likely you'll pop this naturally. If need be, you can get a kill with each weapon with ease in party mode with a second controller. Just ensure you are playing on a Hard track for the precarious edges that you can easily knock them off and are in race mode for the unlimited time.