Best Last Asylum Arthur Build: Skill Priority, Gear and Team Pairings

For Last Asylum: Plague players who want the full Arthur build: every skill, exact scaling, gear order and the team pairings that make him the anchor your account grows around.

Arthur is not just the best tank in Last Asylum: Plague. He is the hero your whole squad's survival depends on.

Every other hero on your roster, from damage carries to support, performs better or worse depending on how well Arthur is built. A half-built Arthur means Marlena dies mid-fight, Grenwald gets one-shot in late Rat Swarm waves and your alliance war squads fall apart before they deal real damage.

This guide covers all five skills with exact scaling, skill priority, gear order, star breakpoints, the team compositions that get the most from his kit and how he performs in every mode. If Arthur is your first hero investment, and he should be, this is the path that makes it pay off.

Meet Arthur

Arthur is a UR (Ultra Rare) hero from the Warrior faction, Tank class. He is the first hero available in the Tavern, though his pull rate drops as the server ages and more heroes join the pool. At max level his base stats are 15,971 ATK, 2,236,301 HP, 15,971 DEF and 350 CMD.

He is the only hero in the game whose whole kit is built around team-wide damage reduction. Other tanks protect themselves. Arthur protects the squad. He has five skills: an auto attack, an ultimate, an active, a passive and a support skill that unlocks at Level 30 with 8 stars.

Arthur skill breakdown

Battle Shield (auto attack)

Swings his shield for 750% ATK Physical damage to one enemy. Stars add extra damage: +40% at 1-star, +100% at 5-star and +200% at 10-star. It will not top damage charts, but at high stars the +200% means his auto attacks add real chip damage between abilities, more than most players expect from a tank.

Earthshattering (ultimate, 6.4s cooldown)

Slams the ground for 1407.5% ATK Physical damage to all enemies in range, and cuts Physical damage taken by allies in range by 32.5% for 5 seconds. Stars add +3% reduction at 2-star, +4.5% at 6-star and +7.5% at 10-star. At 10-star that is 47.5% Physical damage reduction for your squad for 5 seconds.

Two details most guides miss. First, the reduction is Physical damage only. In PvP against heroes who deal Energy or Magic damage, it only partly protects you. Second, 5 seconds is short. Timing it to cover your damage heroes' burst, or to soak a Rat King's heavy slam, is the difference between a wasted ultimate and a great one.

Rock Solid (active, 4.5s cooldown)

Gives Arthur a shield worth 25% of his current max HP that absorbs 50% of each hit, for 3 seconds. Stars raise the shield effect by +20% at 3-star, +30% at 7-star and +50% at 10-star.

The key detail: the shield takes 50% of each hit, not all of it. Arthur still takes the other half. So Rock Solid stretches his HP pool instead of making him invulnerable. At 10-star the +50% bonus lifts the shield to 37.5% of max HP. With over 2.2 million HP, that is a shield absorbing over 400K damage every 4.5 seconds, and on that cooldown it can run almost nonstop in long fights.

Strong Will (passive)

In combat, cuts all damage taken by allied tank heroes by 8.25%. Stars add +0.6% at 4-star, +0.9% at 9-star and +1.5% at 10-star, for 11.25% at max stars.

This is the skill that sets Arthur apart from every other tank. It protects every tank on your team, not just him. In teams running Arthur with Griffith or Bella, its value multiplies across the frontline. And unlike Earthshattering, it covers all damage types: Physical, Energy and Magic.

Tenacity (support, unlocks at Level 30 and 8-star)

ATK, HP and DEF +20%. Skill cooldown speed +10%.

This is Arthur's hidden power spike and the reason 8-star is a must. A flat 20% on all three core stats at once makes his shield bigger (more HP), his protection last longer (more DEF) and his auto attacks and Earthshattering hit harder (more ATK).

The 10% cooldown speed means Rock Solid and Earthshattering come back sooner, so his protective uptime goes up across the board. Tenacity alone is reason to put Arthur's stars ahead of every other hero.

Skill priority

1. Strong Will (passive). Every upgrade pays off across your whole frontline. 8.25% rising to 11.25% at max stars, for every allied tank, in every fight and every mode. Max it first.
2. Rock Solid (active). The shield scales with Arthur's max HP. At 10-star the +50% bonus gives a 400K+ damage buffer every 4.5 seconds. Your main survival tool. Level it second.
3. Earthshattering (ultimate). 1407.5% ATK damage plus up to 47.5% Physical damage reduction for allies at 10-star. Strongest in Rat King fights and wave clears. Level it third.
4. Battle Shield (auto attack). The +200% at 10-star is real, but Arthur's value is protection, not damage. Upgrade it after the three core skills.
5. Tenacity (support). Unlocks on its own at Level 30 and 8-star, with no leveling needed. The goal is reaching 8-star as fast as possible, since the 20% stat boost and 10% cooldown speed switch on the moment you get there.

Gear priority

One rule: HP and DEF first. Arthur's value comes from Rock Solid's shield (which scales with max HP) and Strong Will's damage reduction (which scales with how long he survives).

HP gear first. Rock Solid's shield is 25% of max HP (37.5% at 10-star), so every point of HP grows the shield he puts up every 4.5 seconds. With Tenacity's +20% HP on top, HP gear counts twice.

DEF gear second. Flat damage reduction that stacks with Strong Will's percentage reduction, so DEF on Arthur cuts damage twice: once from the gear, once from the passive.

Ignore ATK stats. Arthur's job is not damage. If you are putting gear into his ATK, you are investing in the wrong output, and that budget belongs on Marlena or Grenwald. The one exception: once Tenacity is active, ATK matters a little more for Earthshattering's 1407.5% multiplier, but it still comes after HP and DEF.

Upgrade his gear to purple and above as soon as materials allow. Going from blue to purple on Arthur gives a bigger squad-wide survival boost than the same upgrade on any other hero.

Star breakpoints

• 3-star: Rock Solid shield +20%. The first real survival spike.
• 4-star: Strong Will +0.6%. Your frontline gets tougher.
• 8-star: Tenacity unlocks. The biggest power spike on Arthur: ATK, HP and DEF +20% and cooldown speed +10%. Everything about him gets better at once. Treat 8-star as a hard milestone, not a nice-to-have.
• 10-star: every skill at max scaling. Battle Shield +200% damage, Earthshattering +7.5% (47.5% total), Rock Solid shield +50% (37.5% of max HP), Strong Will +1.5% (11.25% total). A 10-star Arthur is the strongest hero state in the game.

Arthur fragments come from standard summon banners, the Alliance Shop and some event rewards. Buy his fragments from every source until at least 8-star, then keep going to 10-star.

Best team pairings

Arthur anchors every competitive team. The heroes around him change by mode, but his slot 1 spot does not.

Arthur + Marlena (main damage pairing). The core duo for most content. Earthshattering's Physical damage reduction window is the ideal time for Marlena to unload her burst safely. Together they handle Rat Swarm waves, Rat King fights and PvP. Build both before you widen your roster.

Arthur + Marlena + Griffith (Rat Swarm and bosses). Griffith's spirit snake cuts monster damage taken by nearby allies, which stacks with Strong Will. This trio is the toughest frontline available for PvE. Add Stellar (support) and a flex damage dealer in slots 4 and 5.

Arthur + Grenwald (backup damage pairing). Without Marlena, Grenwald brings heavy magic damage from the backline. Arthur matters even more here, because Grenwald's low HP and DEF leave him exposed without a strong frontline.

For every squad setup, see the team composition guide.

Arthur in every game mode

Rat Swarm (tower defense): essential. Earthshattering's 32.5 to 47.5% Physical damage reduction keeps your squad alive in late waves where enemy damage spikes. A maxed Arthur is the difference between clearing the Rat King and wiping on the wave before it.

Territory reclamation: Rock Solid's 4.5-second cooldown lets Arthur cycle shields almost nonstop through long plague ruin fights, so you can clear without losing heroes.

PvP and alliance war: Strong Will protects your frontline against every damage type, while Earthshattering covers Physical. In alliance events like Hunt Battle and Alliance Duel, a fully built Arthur raises your squad's output by keeping damage heroes alive longer. Against Energy or Magic dealers, Strong Will and Rock Solid carry the defense, since Earthshattering is Physical only.

The short version

• Arthur is a UR Warrior-faction tank with five skills: Battle Shield, Earthshattering, Rock Solid, Strong Will and Tenacity (Level 30 and 8-star). Build him before any damage or support hero.
• Skill order: Strong Will first, Rock Solid second, Earthshattering third.
• Gear: HP first, DEF second, skip ATK.
• 8-star is the key breakpoint. Treat it as a must.
• Core pairing: Arthur + Marlena. Add Griffith for Rat Swarm.
• Earthshattering only reduces Physical damage. Against Energy or Magic, Strong Will and Rock Solid do the work.
• At 10-star with Tenacity, no other tank at the same investment beats him in any mode.

Arthur is the base your whole account grows on. Get him to 8-star before you build anything else.

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