Prevention Mask +20 Enhancement: HQ Filter and KN20

After reaching +10, your Prevention Mask can be pushed all the way to +20. The enhancement from +11 to +20 uses a 100% success rate recipe, so there is no risk of failure or downgrade. The key materials are HQ Filter and KN20, both obtainable from events.

This guide covers the +20 enhancement path, what materials you need, and where to get them.

Enhancement From +10 to +20

Once your Prevention Mask reaches +10 via NPC Marche, you unlock the path to +20. This tier uses a different recipe that offers 100% success rate — every attempt succeeds. The trade-off is that the required materials come from specific events and must be collected before you can proceed.

Required Materials

Two new items are needed for the +20 enhancement tier:

HQ Filter

• A tradable item obtainable from upcoming events.
• Can be bought or traded from other players once available.
• Used in the +20 enhancement recipe for Prevention Mask.

KN20

• Also a tradable item from upcoming events.
• Can be bought or traded from other players once available.
• Paired with HQ Filter in the +20 enhancement recipe.

100% Success Rate

Unlike the +10 enhancement recipes, the +20 path uses a guaranteed success formula. Each enhancement attempt from +11 to +20 will succeed as long as you have the correct materials. There is no need for Safe Enhancement Stones on this tier.

When Will HQ Filter and KN20 Be Available?

Both HQ Filter and KN20 are released through in-game events. Since both items are tradable, you can also acquire them from the in-game market or other players once they are in circulation. Watch official event announcements for availability.

FAQ

Q: How do I enhance my Prevention Mask to +20 in Rohan Online?
A: After reaching +10 via NPC Marche, use the +20 recipe which requires HQ Filter and KN20. Both items come from events and are tradable.

Q: Is the +20 enhancement guaranteed to succeed?
A: Yes. The enhancement from +11 to +20 has a 100% success rate. You will not lose levels on failure because failure cannot occur with these recipes.

Q: Where can I get HQ Filter and KN20?
A: Both items are available from upcoming events. Since they are tradable, you can also buy them from other players once available in the market.

Q: Do I still need to use NPC Marche for the +20 enhancement?
A: The guide indicates the +20 recipe is separate from NPC Marche's offerings. Check with the relevant NPC or enhancement interface once HQ Filter and KN20 become available.

Q: Can I skip straight to +20 without going through +10 first?
A: No. You must first enhance your Prevention Mask to +10 using NPC Marche's recipes before unlocking the +20 path.