Destroy a Vault Secrets

Last updated 2026-10-08

Advanced guide

The useful hidden systems in Destroy a Vault are the Index collection bonus, island-two fusion, Mutation Cores at the Market, and timed events. They build on your robot army; a search for “secrets” does not identify a free secret robot or a hidden reward location by itself.

• Index: open the collection interface to see which robot entries you have filled.
• Fusion: unlock the second island, then use four matching robots.
• Market: use Gems for Mutation Cores.
• Timed boss: collect cores during the event and load the indicated tank.

Index Luck makes collection useful

AlphaShoe checks the Index repeatedly while collecting Commons, Uncommons and Rares. The Bloxodes guide explains that collecting new robots builds Index Luck. This is a reason to check whether a result fills a missing entry instead of judging every offer only by rarity. The live Index displays your collection; a caption list on a wiki cannot tell you which entries your own account already owns.

Do not discard every duplicate without checking the later fusion requirement. Four robots of the same type are inputs for a stronger fused robot once the second island is open. One robot of four different types is a different inventory and will not satisfy that matching-set rule. The fused result cannot be fused a second time in the described system. See the exact fusion sequence.

What the Market unlocks

Flame, Frost and Lightning Mutation Cores appear in the guide’s Gem Shop description. These are purchased with Gems, then used on a selected robot. A mutation changes the damage side of that robot. This is a separate layer from spending Cash on Robot Damage or individual upgrades. Choose the robot you will continue using before you apply a modifier.

Timed events are different from the normal vault

AlphaShoe’s later event asks the player to pick up cores and load them into a tank. The player sees a three-minute timer and collects cores outside the immediate fighting field as well as nearby. The recording shows a contribution percentage and a Gem gain, but does not establish an exact reward formula. Follow the tank prompt and keep feeding cores while the timer runs. The boss guide separates those actions from regular Gold collection.

Is there a secret code or secret robot?

The developer advertises RELEASE, UPDATE and 100K. None of those names establishes a hidden robot unlock. This page preserves the useful systems shown in the available gameplay without inventing an extra reward. If a roll displays a secret rarity in your current version, use its exact in-game name and price for the purchase decision; the present robot catalogue does not include a source-backed secret-stat entry.

Use the advertised code list for public free rewards, the named robot reference for collection, and progression decisions for spending your next Cash.