Bonus rounds
From Halopedia, the Halo wiki
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.
