This article is about the gameplay modifiers in Halo: Spartan Strike. For other uses, see Skull.
Halo: Spartan Strike skulls are game modifiers featured in Halo: Spartan Strike with the appearance of a human skull. Like its predecessor Halo: Spartan Assault, Spartan Strike skulls do not increase the player's in-game score. Instead, they multiply the amount of cR the player is awarded upon completing a level.
List of skulls
Black Eye
Shields only recharge from melee attacking enemies. Adds 25% cR bonus.
Blind
Vital HUD elements are hidden. Adds 100% cR bonus.
Famine
Dropped weapons have much less ammo. Adds 75% cR bonus.
Hollow
The Spartan only has a shield. Adds 50% cR bonus.
Pacifist
Shields and armor deplete when firing a weapon. Adds 100% cR bonus.
Thunderstorm
Enemies are more challenging. Adds 50% cR bonus.