general3 min read· updated 2026-11-08
King Slime
The last fight of the Kerning party quest: 16,820 HP, resists fire, ice, lightning and holy but not poison, and the easiest boss to hit.
Every number and name on this page is read live from the game data.
King Slime is not a field boss. It is the last fight of the Kerning party quest, so you never wait for a timer. Every member must be Lv. 21 or higher. A party of four is reference data, not confirmed in Classic World. The party quest runs on Channels 3 to 12, as of the 21 Oct Grand Launch notes.
Nexon states a minimum of Lv. 21 and no maximum. Neither a cap nor its absence is confirmed in play. One report so far says a formed party can be refused when too many parties are already running. That is more likely than a level problem, so do not start removing people. See the Kerning PQ guide.
Take from before your first run. It asks you to beat King Slime once and pays 1,870 EXP, 687 mesos, 1 fame and one Intermediate earring scroll (60%, +2). The scroll is a random roll, equal weight in the client, among , , and . Off-class is normal. Sell it.
What the 2,400 EXP means
King Slime carries 2,400 EXP, the most of any live mob, ahead of Jr. Balrog's 2,188. That is the mob's value, not what lands in your bar. How it splits across a party has not been tested.
The fight
- Jump, 360 before defence. That is 125% of its 288 W.ATK, and it is the only attack listed. Treat 540 HP as a floor, which is our margin, not a measurement. Low-HP party members should keep clear of it and refill early.
- Summons. The client gives it one summon skill. What it calls and when is not in our data. Report what you see.
- The room. The stage holds 3 , 6 and King Slime, and the first two respawn after 180 seconds. Reference data, not confirmed in Classic World, says each of those ten drops a . See the Kerning PQ guide.
- Kill order. We have no tested order. Agree on one before the stage.
Who does what
Avoid 11 is the lowest of any boss. By our estimate you need 37 accuracy at Lv. 32 and 53 at Lv. 21. A Lv. 21 Warrior with 25 DEX has about 40, which lands roughly half your swings by the same estimate, so a low-DEX warrior can still fight here. adds 5 and adds 7. See the boss overview for how the estimate works.
W.DEF and M.DEF are both 15, so magic takes no penalty as such. The only question is which spell.
| You are | Use | Why |
|---|---|---|
| Magician under Lv. 30 | , | No element, nothing to resist |
| Fire/Poison | Neutral. is resisted and cannot burn resistant mobs | |
| Ice/Lightning | Energy Bolt, Magic Claw | is resisted. cannot stun it, and whether its damage drops too is unconfirmed |
| Cleric | Energy Bolt, Magic Claw, and keep the party up | King Slime is marked holy-resistant, and whether uses that mark is unconfirmed. only damages undead |
| Warrior, Bowman, Thief | Your usual attack | The marks do not touch a plain weapon attack |
Drops
We hold no drop rows for King Slime. The run's reward is the . Since 21 Oct it gives fewer gem ores and can give a , in amounts Nexon has not stated. See the Kerning PQ guide. If King Slime drops something, tell us through the drop report.
Next: the quest pays once, so run again for the box. At 34, go to The Old Tree.
Not confirmed yet
- How the 2,400 EXP is shared, and how level gaps in a party change it.
- Whether a maximum level applies.
- What King Slime summons and when.
- Warrior build variants: dexless and moreDoes dexless work in Classic World? Unproven, and nobody has posted results. What it gains at 30, what it loses from 40, and the armor and scroll limits most guides skip.
- Spearman guideEstimated reach, Iron Will and the only warrior self-heal. Why polearm is the default but spear is no mistake, what v1.1.0 changed for Rush and absorb, and honest limits.
- Page guideThe hardest single-target Final Attack, the crafted blunt line and the option of a shield. 2H blunt or 1H and shield, and when Threaten is worth its 30 SP.
- Fighter guideRage, the only multi-target Final Attack and fast 2H weapons. SP order, axe or sword, a weapon plan that works without level 30 shops, and what is known to 70.
- Warrior build: 1st job, your branch and gear you can getHow to spend 61 SP before level 30, how to choose between Fighter, Page and Spearman, and what gear you can actually obtain at each level, quests included.
- Mage build variants: how much LUK?The one stat decision every mage faces. Three LUK plans compared on gear that really exists, what lukless actually costs, and why you can always add LUK but not remove it.
- Cleric guideIs Cleric worth it? What Heal, Bless and Invincible really do in Classic World, party and solo SP orders, and where a mage with a single-target attack should train.
- Ice/Lightning Wizard guideThe cheapest damage among mages: Cold Beam for single targets, Thunder Bolt once four mobs are in reach. SP order, when each spell pays, and what to do about the lean 40s and 50s.
