How to Get Max Mastery Fast in Slayers 2 (September 2026) Ultimate Guide

Mastery unlocks and upgrades abilities for your weapons, Breathing Techniques, and Evil Arts. The fastest way to max it in Slayers 2 is to hit level 225 first, then farm Crow (Slayer) or Muzan (Demon) boss quests in a busy server. Before the cap, Dungeons are your best bet. Here’s the quick version:

Your Stage	Best Method	Why It Works
Before level 225	Dungeons	Points convert straight into Mastery
Mid-game, weak build	Tier 3 chest guards	Mastery plus chest loot
Level 225	Crow / Muzan boss quests	Quest EXP converts into Mastery
Anytime	Ranked PvP	About 1,000 Mastery per win

Step 1: Reach Level 225 First

I’d resist grinding Mastery too early. At level 225, several Crow and Muzan quests that normally give EXP reward Mastery instead. While you climb, keep using the weapon, Breathing Technique, or Evil Art you want to level, because Mastery is tracked separately from your player level. For the climb itself, follow the quest chain: Krue, Tom, Chaka, Wagwan, Jugg, Goro, Tomoi, Shiro, and Mitsu, then switch to Crow missions.

Step 2: Unlock Crow or Muzan Quests

Slayers get the Kasugai Crow by passing Final Selection (level 45 minimum). Demons ring their Biwa Bell to take Muzan’s bounties. Boss targets join the quest pool around level 125, and Crow missions become the fastest EXP past level 145. Check your mission list and prioritize contracts for bosses you already farm.

Step 3: Pick the Right Server

Quest rewards scale with how many high-level players are in the server. One test showed roughly 3,000 XP in a quiet server versus 6,000 in a busy one. Sources disagree on whether it counts your own race or the opposing one, so check the quest reward before you settle. Open your quest menu first: you want strong rewards and enough open quests. Public servers mean quest stealing, and private servers pay less unless you invite high-level friends.

Step 4: Farm Boss Quests at Max Level

The loop is simple: accept a boss quest, kill the target, turn it in, and move on.

Double-dip: take a Crow hunt and the local NPC quest for the same boss (Mother Bear and Hoyuzo show up often), then turn in both.
Rotate bosses while a quest is on cooldown instead of waiting.
Use shrines to cut travel time.
Pick fast kills: a bigger reward isn’t better if the boss takes three times longer.
Stay credited: if a stronger friend helps, keep hitting the boss so you still get credit.

Step 5: Use Double Mastery Potions Properly

Wasting even part of its duration hurts. Plan your server, route, and boss list first, then drink the potion and farm nonstop. Below level 225, I’d save it and use a Double EXP Potion instead.

Step 6: Farm Dungeons Before Max Level

Unlock Dungeons at level 65 after the Forge quest, then choose Dungeon mode in the Hub. Normal gives three lives, while Ranked gives one, so Normal is better for farming. Not ready for that? Tier 3 chest guards near the Tundra give Mastery plus chest rewards.

Pick cards in this order: Lucky Draw, Vampiric, Streak, and boss multipliers, then Damage, HP, Cooldown Reduction, and Block Points. One 1.5-hour run with good point cards reportedly earned 20–50 Mastery levels.

Exchange your points afterward: