Minimal Effective HP (MEHP)

“Effective HP is an the amount of damage a player can take, or in other words how much damage the enemy needs to deal for the player to inspect the floor from really close”

- https://www.nw-hub.com

The Minimal Effective HP metric describes the worst case scenario: The enemy has all its luck and does a critical strike, while also having combat advantage. On the unlucky side, you have no unreliable bonus triggered and failed to deflect the hit. Nonetheless, reliable sources like the Awareness of “Dig In” and full stamina shielding are calculated.

Then the Minimal Effective HP is calculated by:

MEHP=(TotalHitPoints+TemporaryHP+BarrierHP+DigInShield)                ∗ (1+Defense)                / (1+CombatAdvantageEnemy−Awareness)                / (1+CriticalSeverityEnemy−CriticalAvoidance)                ∗ 1/(∏MitigationMultiplier)MEHP =(Total Hit Points +Temporary HP + Barrier HP + Dig In Shield )\\~~~~~~~~~~~~~~~~*~(1+Defense)\\~~~~~~~~~~~~~~~~/~(1+Combat Advantage_{Enemy} - Awareness)\\~~~~~~~~~~~~~~~~/~(1 + Critical Severity_{Enemy}-Critical Avoidance)\\~~~~~~~~~~~~~~~~*~1/(\prod Mitigation Multiplier)

Notes:

  • Temporary Hitpoints are shown in a yellow bar over the Hitpoints.

  • The blue bar on top of the HP and the Temporary Hitpoints is the Barrier HP.

  • The Mitigation Multipliers are bonis that are written along the line "You take -5% Damage from all sources".

Example: The Tank has 1 000 000 HP including all bonuses from VIP, food, gear, etc. The Tank uses Dig In and Iron Warrior (20% Mitigation). The Defense and Awareness stats are capped (90%) and the Crit Avoidance stat is 80%. Then the MEHP is:

MEHP=(1 000 000+0+0+600 000)                ∗ (1+0.9)                / (1+0.9−0.9)                / (1+0.9−0.8)                ∗ 1/(0.8)                =3 454 545MEHP =(1~000~000+0+0+600~000 )\\~~~~~~~~~~~~~~~~*~(1+0.9)\\~~~~~~~~~~~~~~~~/~(1+0.9-0.9)\\~~~~~~~~~~~~~~~~/~(1+0.9-0.8)\\~~~~~~~~~~~~~~~~*~1/(0.8)\\~~~~~~~~~~~~~~~~ = 3~454~545

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