Ruckus Rumble

Minimum requirements: 4 players, 1 controller.

This is the most fiddly of the trophies if you don’t have many controllers due to the account switching, but it’s still extremely easy. Start up a game with 4 players and once it begins, bunch the three alternate players together. Now take your main account over to where they are and spam to kill them all quickly with your sword. Once all players are killed, providing you did it within the very lenient 30 seconds, the trophy will pop.

You will also unlock Coup de Grace using this method if you don’t already have it by now.