SEASON 1 · WEEKLY ROADMAP

Week 2 — Permanent Decisions

Mason UR, Hero Level Swap, Crimson Legion and Lv3/Lv4 Cities.

ScopeModern Serum rollout

Quick read

Week 2 is where Season 1 stops being only a resistance race and begins forcing permanent account decisions and organized City defense.

Facts

Planning example: Day 8 Mason SSR→UR and Hero Level Swap; Day 10 Lv3 Cities; Day 14 Lv4 Cities. Confirm the current event dates.
Check the live Crimson Legion schedule for active attack windows; do not assume fixed weekdays.
Mason promotion rules retain hero level, reset stars to 3★ UR and skills to Lv1, and refund eligible Skill Medals/Wall shards.

R4 / R5

Publish Crimson Legion targets early, manage limited defense slots intelligently and keep mapping Lv3/Lv4 captures into the Week 3 Lv5/Lv6 route.

Watch out

Shards spent on Mason’s SSR Wall of Honor are returned by mail. Shards used to raise his SSR stars are spent. Check the promotion and UR star-up screens to plan your rebuild.
Do not confuse active-season Crimson Legion with off-season Queen’s Revenge.

DETAILED GUIDE

How it works

Target: Modern Serum Collection + Serum Shop Season 1

Week 2 headline

Week 2 is where Season 1 stops being only a resistance race and begins forcing permanent account decisions. Mason can become UR, Hero Level Swap becomes available, Crimson Legion starts attacking alliance cities, and Lv3/Lv4 territory opens.

What should I do with Mason?
Should I use my Level Swap coupons now?
What does my alliance need to do before the first Crimson Legion attack?

Week 2 timeline

Day 8 / Week 2 Day 1

Mason SSR → UR promotion becomes available.
Hero Level Swap becomes available.
Crimson Legion event period begins.

Tuesday of Week 2

Planning example: first Crimson Legion City attack; confirm the active event date.

Day 10 / Week 2 Day 3

Planning example: Lv3 Cities unlock; check the current City timer.

Friday of Week 2

Second weekly Crimson Legion attack window.

Day 14 / Week 2 Day 7

Planning example: Lv4 Cities unlock; check the current City timer.

Public timing rule: show the expected Season Day, but always let the in-game Season/City Clash timer override static wording if a rollout differs.

Player

Keep Protein Farms and VRI progressing.
Decide whether Mason promotion creates real account value.
If promoting Mason, plan the 3★ reset before pressing the button.
Use Level Swap only when it improves a meaningful hero.
Keep Virus Resistance ahead of the PvE content you are trying to clear.
Treat infection quickly when it starts hurting combat.
Follow alliance instructions for Crimson Legion.
Watch Lv3 and Lv4 city openings.

R4/R5

Publish the Crimson Legion target and defender plan.
Track city durability across attacks.
Map the Lv3/Lv4 route into Week 3 Lv5/Lv6.
Track current city protection expiry using the live timer.
Identify high-Resistance rally leaders.
Keep diplomacy moving before Warzone Expedition opens in Week 3.