Progression guide • Updated July 2026

How to Get and Spend Keys in Final Swarm

A record-first Key route that avoids invented farming rates and universal unlock orders.

QUICK ANSWER

Survive waves, record the Keys you actually earn, copy visible target costs, and spend toward a named loadout gap. Use several similar runs before entering a personal average.

Step-by-step

Do this in your next run

1
Choose one loadout goal
Name the problem the next unlock should solve: groups, priority targets, safe range, movement burden or a missing balanced primary.
2
Copy every visible cost
Use the current in-game unlock screen. Add target labels and costs to the Key Budget; leave a cost blank when the game does not show it.
3
Record comparable runs
Track Keys gained across several attempts with similar world, difficulty and group conditions. A single lucky result should not become a permanent estimate.
4
Compare complete plans
Select one group of targets, review total cost and remaining Keys, then test an alternative. Do not compare a complete plan against a row with a missing price.
5
Spend and reset the plan
After buying, update current Keys and remove completed targets. Recheck weapon behavior before automatically funding the next upgrade.

If you're stuck

Common mistakes

Using a public rate as guaranteed

Enter only your observed average and change it when conditions change.

Counting a code before Claim

Treat reported rewards as leads, not permanent income.

Buying rarity instead of coverage

Use the planner to name the missing loadout job first.

Leaving selected costs blank

The tool warns and excludes them; fill the in-game cost before comparing totals.

Common questions