Chronicle, player level, rates, city & tax

Lv diff	XP	Loot/Spoil	Boss
+++	100%	100%	100%
0	100%	100%	100%
-1	100%	100%	100%
-2	100%	100%	100%
-3	100%	100%	85%
-4	100%	100%	70%
-5	100%	100%	55%
-6	83%	82%	40%
-7	69%	64%	25%
-8	58%	46%	10%
-9	48%	28%	RAID CURSE

Hunting Interlude

Damage, accuracy and skill formulas

Understand the inputs behind combat calculations and their implementation limits.

L2Tools guideUpdated 2026-09-12

Physical damage and Soulshots

These are simplified aCis baselines before position, critical, random, resistance and PvP modifiers.

Physical damage and Soulshots
Case	Baseline
Normal hit	77 * P.Atk / effective P.Def
Soulshot normal hit	Baseline damage * 2
Physical skill	77 * (P.Atk * shotMultiplier + skillPower) / effective P.Def
Normal shield block	Shield defense is added to P.Def
Perfect shield block	Returns 1 damage

Magic damage and criticals

M.Atk scales through a square root. Doubling M.Atk does not double spell damage.

Magic damage and criticals
Case	Baseline
Spell	91 * skillPower * sqrt(M.Atk * shotMultiplier) / M.Def
Shot multiplier inside sqrt	1 without; 2 Spiritshot; 4 Blessed Spiritshot
Magic critical	aCis multiplies successful magic damage by 4
Critical rating	Tested against a random integer from 0 to 999; rating 100 corresponds to 10% before other modifiers

Accuracy, casting and dagger blows

Hit chance, critical chance and dagger landing are separate tests. Skill and position matter.

Accuracy, casting and dagger blows
Mechanic	Implementation
Normal hit threshold	clamp((90 + 2 * adjustedAccuracyDifference) * 10, 300, 980)
Accuracy adjustments	Position, night and height alter the difference; integer RNG boundaries matter
Casting time	skillTime * 333 / relevant attack speed; separate from reuse time
Dagger blow	Uses skill base land rate, DEX, position and blow modifiers; not normal Critical rating

Debuffs and regeneration

Effect success combines base chance, target stat, resistance, magic and level modifiers. Regeneration normally ticks every 3 seconds.

A real implementation disagreement

Mobius uses coefficient 76 for its basic physical formula and different magic-critical multipliers. Its Interlude file contains later-formula comments. The two implementations cannot establish a single authenticated retail formula.

Keep in mind

Emulator formulas are conditional references. No live player damage is calculated from missing stats.
Critical damage, chance to hit, chance to land a blow and debuff success must remain separate.

Physical damage and Soulshots

These are simplified aCis baselines before position, critical, random, resistance and PvP modifiers.

Physical damage and Soulshots
Case	Baseline
Normal hit	77 * P.Atk / effective P.Def
Soulshot normal hit	Baseline damage * 2
Physical skill	77 * (P.Atk * shotMultiplier + skillPower) / effective P.Def
Normal shield block	Shield defense is added to P.Def
Perfect shield block	Returns 1 damage

Magic damage and criticals

M.Atk scales through a square root. Doubling M.Atk does not double spell damage.

Magic damage and criticals
Case	Baseline
Spell	91 * skillPower * sqrt(M.Atk * shotMultiplier) / M.Def
Shot multiplier inside sqrt	1 without; 2 Spiritshot; 4 Blessed Spiritshot
Magic critical	aCis multiplies successful magic damage by 4
Critical rating	Tested against a random integer from 0 to 999; rating 100 corresponds to 10% before other modifiers

Accuracy, casting and dagger blows

Hit chance, critical chance and dagger landing are separate tests. Skill and position matter.

Accuracy, casting and dagger blows
Mechanic	Implementation
Normal hit threshold	clamp((90 + 2 * adjustedAccuracyDifference) * 10, 300, 980)
Accuracy adjustments	Position, night and height alter the difference; integer RNG boundaries matter
Casting time	skillTime * 333 / relevant attack speed; separate from reuse time
Dagger blow	Uses skill base land rate, DEX, position and blow modifiers; not normal Critical rating