Bonus rounds are difficult levels that occur only in firefight.The skulls Iron,Tilt Famine Black Eye are turned on.The points you earned are either double or triple.
/*Trivia*/
- Depending what kind of firefight game mode,it s,you'll get different types of bonus rounds.
- One type is All Elites.
- Another,all hunters.
- And all grunts.
- Gruntpoclypse is related to bonus rounds.