The verified progression loop
- Enter the current world and observe how normal waves pressure the character.
- Collect keys and other rewards the live result screen awards.
- Read the current weapon and chest descriptions before spending.
- Equip a loadout that covers the failure observed in the baseline run.
- Repeat the same checkpoint and keep the change only if survival or clear consistency improves.
Classify the first failure
- Crowds reach you: improve area coverage, control, or safe movement.
- A durable target stalls the run: add focused damage instead of more redundant wave clear.
- The loadout works but arrives under-upgraded: protect keys for the upgrade path shown in the current client.
- You survive but cannot finish: check damage uptime and whether a weapon spends too much time idle.
Facts not invented here
The reviewed official pages do not provide a permanent drop-rate table, damage spreadsheet, chest cost list, boss schedule, or world unlock table. Read those values in the current client and date any notes you keep.