Halo: Spartan Strike skulls

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.

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.