Spend Underground Purge reward currency on a useful item in the live Global exchange before its displayed stock changes.
PC / Global English
WHERE & HOW TO FARM
Where to farm
Fight > Underground Purge or its current event entry for rewards; Shop > Event Exchange > Underground Purge for purchases.
Underground Purge has an exchange associated with its rotating activity, but exact stock and reset timing should be read from the current Global shop. Complete the available mode objective, claim the result currency, and compare the exchange inventory with a specific account shortage. The route is useful only when the activity and relevant stock are currently available; it is not a generic daily material farm.
Underground Purge is currently accessible in the game menu.
The mode shows an available reward or currency objective.
The live exchange lists an item that helps a current upgrade.
Open the current Underground Purge entry and inspect available objectives and reward conditions.
Choose an accessible challenge that you can complete reliably.
Clear the activity according to its displayed objective and collect the result.
Check your currency balance to confirm the mode reward was received.
Open Shop > Event Exchange and select the Underground Purge tab if present.
Inspect listed items, costs, and the reset or availability text shown in your client.
Redeem currency for a specific useful item and apply it to its intended progression use.
Farming tips
Use the Global shop’s live stock and timing labels; do not rely on a remembered rotation.
Prioritize the exchange item that resolves a current shortage before optional purchases.
Repeat, collect and use
Limited by the mode’s current availability, reward currency, and exchange inventory; the activity and stock can rotate, so repeat only while the client shows an active route.
Common mistakes
Treating the mode as permanently open: verify its current menu presence first.
Assuming a twice-monthly reset or fixed stock: follow the timing and inventory shown in-game.
Entering without a purchase goal: check the exchange before farming so the reward has a use.
When to stop or switch
Stop when the useful live stock is purchased, no more currency is available, or Underground Purge is no longer shown as accessible.
