The world of Odin: Valhalla Rising is celebrating a major milestone with Roskva’s 1st Anniversary Thank-You Letter Exchange Event. This limited-time celebration isn’t just a simple login reward—it’s a full field-farming, progression-boosting opportunity designed to help both new and veteran players strengthen their characters significantly.

If you play efficiently, this event can translate into meaningful stat gains, Odin Valhalla Rising Diamonds, and rare summon items—all from something as simple as monster hunting.

This guide breaks down everything you need to know: how to farm efficiently, what to prioritize, how the exchange system works, and how to maximize every single fragment before the event ends.

1. Event Overview – What This Celebration Is Really About

At its core, the event revolves around collecting a special drop item:

Roskva’s Letter Fragments

These fragments drop from monsters in the field during the event period and can be exchanged for valuable rewards, including:

Growth materials (boonstones, relics)

Gold

Summoning tickets

Limited item collection buffs

The key idea is simple:

Farm mobs → collect fragments → exchange for progression rewards → register event collections for buffs

But the value lies in optimization. Players who understand timing, exchange caps, and priority rewards will gain significantly more than casual farmers.

2. Event Schedule – Don’t Miss the Windows

The event runs for a limited time:

Start: 2026-04-15 22:00 UTC+0

End: 2026-05-13 19:00 UTC+0

Local time conversion (UTC+8):

2026-04-16 06:00 → 2026-05-14 03:00

Important note: there is also a delayed exchange unlock system, meaning some rewards cannot be accessed immediately.

3. Core Farming Item – Roskva’s Letter Fragment

These fragments are your currency for everything in the event.

You obtain them by:

Killing field monsters

Grinding grinding zones (any open-world hunting areas)

There is no mention of dungeon exclusivity, meaning efficient field farming is the main method.

Fragment usage tiers:

1 fragment → Gold

20 fragments → daily chest reward

50 fragments → anniversary letter exchanges

300 fragments → high-tier rewards

This creates a clear priority system: save vs. spend vs. convert wisely.

4. Best Farming Strategy – How to Maximize Fragment Gain

Even though the event seems straightforward, efficiency matters a lot.

Recommended Farming Approach

1. Choose high-density monster zones

Look for:

Fast respawn areas

Low travel downtime

Multi-mob pull potential

The goal is not difficulty—it’s kill speed.

2. Build for AoE clearing

Classes or builds that excel at:

Wide-area damage

Fast cooldown rotations

Movement speed efficiency

will drastically outperform single-target builds during this event.

3. Maintain continuous uptime

Idle time kills efficiency. Focus on:

Minimal inventory interruptions

Pre-buffing before farming

Staying in one loopable zone

4. Party farming (if possible)

If drop sharing or kill speed increases:

Group farming can significantly increase fragment per hour

Especially in contested zones

5. Exchange System Breakdown – What to Prioritize

This is where most players make mistakes. Not all rewards are equally valuable.

Low-Cost Exchange Options

1 Fragment → 500 Gold (Unlimited)

This is mostly a filler exchange. Only useful if:

You are extremely early game

You need quick currency

Otherwise, avoid overusing fragments here.

20 Fragments → Boonstone Supply Chest (Daily)

1 Weapon Boonstone

1 Armor Boonstone

This is a very efficient daily investment.

Recommended: Always do this daily

Best for steady character growth

Mid-Tier Progression Option

50 Fragments → Anniversary Thank-You Letter (Limited)

Unlocked in two phases:

2026-04-22: 5 exchanges per server

2026-04-29: additional 5 exchanges per server

This item is extremely important because it feeds into:

Item Collection buffs (see Section 7)

Priority: HIGH

Do not miss exchange windows

Save fragments in advance