Toughbrew is a custom Perk-a-Cola in the non-canonical Nazi Zombies storyline Hellbound. Toughbrew costs 1000 points. When purchased, this Perk increases the penetration of any weapon. This can be helpful when the player is shooting through rows and lines of zombies. When used with Dragon's Breath, this Perk-a-Cola is extremely deadly. The high penetration and incendiary rounds inflict a large amount of damage on zombies.
- Toughbrew will not allow bullets to penetrate metal, or any other hard material.