Obtaining
- Killing zombies
- Collecting vials of Dark Aether Essence that sometimes drop from tougher enemies
Uses
- Unlocking doors and removing obstacles
- Some allow you to split the cost with a teammate
- Buying Perk-a-Colas via either:
- A single machine, adding a specific advantage to your Operator
- Der Wunderfizz, which vends all Perk Cans on a map
- Buying Pack-a-Punched weapons
- Tier I, II, & III all increase potency and ammo reserves further
- Will occasionally apply an unexpected effect
- Accessing objective-related devices
- Summoning a Tactical Raft
- Purchasing ammo from Ammo Caches
- Purchasing additional weapons with rarity ratings from a Weapon Wall Buy
- Purchasing Tier II & III armor from an Armor Level Wall Buy
- Purchasing a random weapon with a rarity rating from a Mystery Box
- To start a special Trial challenge