Unlock the following Death Cards by completing the corresponding levels:
DEATH CARD - HOW TO UNLOCK Berserker - Complete breaking point. Body Armor - Complete ring of steel. Cold Dead Hands - Complete vendetta. Flak Jacket - Complete relentless. Hard Headed - Complete little resistance. Painkiller - Complete blowtorch and corkscrew. Paintball - Complete heart of the reich. Sticks and Stones - Complete their land, their blood. Suicide King - Complete hard landing. Thunder - Complete semper fi. Undead Soldier - Complete eviction. Vampire - Complete burn ‘em out. Victory - Complete downfall.