Destroy a Vault Progression Route: Mid-Game Priorities

The mid-game question: what do I buy next?

Once the beginner loop is running, every session becomes the same decision: limited Cash, five systems asking for it. The official loop names them all — roll rare robots, build the army, attack the vault, smelt Gold into Cash, upgrade robots, expand the base, unlock stronger vaults. There is no single correct order, but there is a reliable framework, and it starts from one principle: buy income before you buy ceiling.

The five levers, ranked by payback speed

1. Roster depth — the fastest payback. A newly deployed robot contributes damage the moment it lands (army building). Until every slot is filled and freshly refreshed, this is the default buy.
2. Robot upgrades — guaranteed, immediate (upgrade guide). Upgrading your strongest attacker converts Cash into Gold-per-hour with zero variance.
3. Vault tier — not a purchase of damage but a purchase of payout multiplier: the same army earns more per crack on a higher tier (tiers guide). Buy the unlock the moment your time-to-burst says you are ready; do not buy ahead of your army.
4. Rarity rolls — the slow-payback ceiling. Rolls are the only path to the rarest robots (rarities), but each roll’s value is variable. Fund rolls from surplus, not from money your income needs.
5. Base expansion — the long game. The official loop lists it with upgrades as Cash’s main jobs; treat it as the buy that unlocks the next chapter, made from comfortable surplus.

How to detect what you actually need

Your session tells you the answer if you watch two signals:

• Time-to-burst on your current vault. Melting instantly → buy the tier unlock. Sluggish → buy damage (roster, then upgrades).
• Cash balance trend. Rising every session with nothing bought → you are hoarding; the game is waiting for a decision. Falling without income growth → you are ceiling-chasing too early; return to income buys.

A repeating weekly shape

A cadence that works well once your income is steady:

1. Log in → collect and smelt the offline Gold
2. Income buys first: roster gaps, then your top attacker’s upgrade
3. Tier check: if the vault is melting, climb
4. Surplus into rolls — ideally right after a tier climb or big pull, when the marginal value of a rare is highest
5. Base expansion when surplus survives steps 1–4
6. Log out deployed — full roster, Cash spent

The BOSSES update changes your targets, not your order

Boss vaults add high-value group targets (servers hold six players), but they reward exactly what the solo ladder rewards: a deep, high-damage roster. Progression order survives the update intact — see boss vault raids for the raid layer itself.

Stall points and how to break them

• “My income stopped growing.” Almost always a smelting or spending stall — check for unsmelted Gold and hoarded Cash before blaming your army (economy guide).
• “I cannot crack the next tier.” Buy variance-free damage (upgrades, roster) rather than more rolls; rolls are for surplus.
• “Rolls eat everything I earn.” Cap roll spend per session (for example: after income buys, tier check, then rolls) and let the discipline hold until income rises.

Next steps

• Vault tiers, explained
• Robot upgrades guide
• Offline earnings guide