Drop down into the ventilation shaft. You will land in the Cryo Storage Vault. The temperature is freezing, which slows your movement by 20% (annoying), but it does something amazing to the zombies: they freeze solid after three seconds inside.
The vault door will now open. Inside is not a weapon—it is a Gold Bar stack. You cannot pick up the gold. Instead, shoot the middle bar 50 times. It breaks, revealing a hidden switch.
Did we miss a secret? Have you found the "Golden Toilet" in Act 4? Let us know in the comments below, and check back next week for our guide on Zombie Shooter 2 boss cheese strategies zombie shooter 2 secret locations better
Standard secrets give you ammo. This location changes your strategy. You can kite exploders into the room, watch them freeze, then shatter them with a single punch. No other secret in the game offers environmental crowd control like this. 3. The Bank Vault (Act 1, Mission 2 - "Better" Early Game God Mode) Most players skip the shopping district because the zombies are easy. That is a trap. You need to return here after you find the Keycard in Act 2, but most guides don't tell you that.
A portal to the "Dev Room." Three NPCs named "Sig," "Jay," and "Tom" stand behind a counter. They do not attack. Speak to Tom. He gives you the Black Card. Drop down into the ventilation shaft
In Act 1, you see a massive bank vault door. It says "Requires Level 5 Access." Do not ignore it. Once you hit Level 5 (usually during Act 2, Mission 3), replay Act 1, Mission 2 from the main menu.
Immediately after the first tunnel collapse, you will see a broken maintenance ladder on the left wall. You cannot climb it directly. Instead, shoot the explosive red barrel behind the ladder. This doesn’t damage you but blows a hole in the wall texture. The vault door will now open
Walk through the hole to find a hidden rail control room. Inside, you will find the Railgun Sniper (one-hit kill until Act 4) and a console. Interact with the console (press E, Up, Down, Left, Right quickly). If done right, the screen flashes green, and a train will drive through the main tunnel outside, killing every zombie on screen instantly.
