Because Zombie Shooter 2 has a notoriously harsh save system (you can’t save mid-mission easily), here is a pro-strategy:

While the game is procedurally dynamic in its enemy spawns, the level geometry is static. Here are a few types of locations to watch for:

"Dawn of the Dead Metro" The Secret: After you clear the first subway car, look up. Most players run straight down the tracks. Instead, turn left and climb the collapsed concrete pillar.

Finding all hidden parts is essential for upgrading to late-game gear like the Intervention M220 SLR 500 Auto R5 💡 Pro Tips for Treasure Hunting Use the "Observant" Perk: