You play as the Locust, killing COGs. […]You're going to be playing as a lot of different Locust, from Tickers to Cantus Priest's to Berserkers.
Beast Mode offers the mirror side of Horde mode. You and up to three friends play as Locusts, wiping out the entrenched Gears on the various multiplayer maps. […] Unlike Horde mode, you have more than one life. After all, playing as a Ticker, your goal is to get close to a Gear and explode. Wouldn't be very fun if that was the end of the round for you. Killing COGs earns you tokens, which can be spent to respawn into different characters.