Damage taken

LevelGap = PlayerLevel − MonsterLevel, or 0 if the monster is higher

MonsterHitScore = MonsterAcc × 100 / ((LevelGap + 51) × 5)
EffectiveAvoid  = Avoid / (Avoid / 80 + 1) / (LevelGap / 40 + 1)

Spread = 0.15 + 0.2 / (1 + exp((MonsterHitScore − EffectiveAvoid) / 12))
Roll   = rand(1 − Spread, 1 + Spread)
Hit if Roll × MonsterHitScore ≥ EffectiveAvoid

If the roll fails and EffectiveAvoid > (1 + Spread) × MonsterHitScore:
  RescueChance = clamp(0.03 × exp((MonsterHitScore − EffectiveAvoid) / 18), 0.02, 0.03)
  Hit if rand(0, 1) < RescueChance

If it still missed: hit 8% of the time anyway.

• Avoid runs into a wall. 100 avoid counts as 44, 300 as 63, and nothing ever counts as 80.
• Out-levelling a monster cuts its hit score and your effective avoid together, so it can hit you more often: at 100 accuracy against 100 avoid, its plain roll lands 25.44%, 39.88% and 50.49% at gaps of 0, 20 and 50 levels.
• Past the roll's reach you are hit 9.84% to 10.76% of the time: the 2–3% rescue, then the 8% on what is left. An Orange Mushroom lands 22.0% on a level 30 thief with 51 avoid.
• Some monsters carry a further 50% miss check on a roll that passed. Which attacks set it off is not pinned down, and the calculators leave it out.

Try itIts chance to hit you

The monster

Monster

×

Its level−+

Its accuracy−+

You

Your level−+

Your avoid−+

Orange MushroomLv 8 · Accuracy 62

21.99%

Chance it hits you

The roll lands 15.21%. The 8% fallback on a failed roll adds 6.78%.

Hit 21.99%Dodged 78.01%

Hit score

16.99

Your avoid counts as

20.09

Roll lands

15.21%

In CoT2

21.99%

A monster's skill attack skips this roll and always lands.

Only a regular attack rolls this. The guard rolls come after, on the hits that get through.

A monster with invincible = 1 skips the shield and Claw Guard rolls.

• It only skips the guards. Your avoid still gets its roll first.
• In the release the flag is on 5 monsters, the jump-quest obstacles:

• Super Jr. Necki
• Super Ribbon Pig
• Super Slime
• Super Stirge
• Ultra Jr. Necki 1

ShieldDefense = Weapon Defense on the item in the shield slot

Only if ShieldDefense > 0:
  GuardChance = max(0.05, ShieldDefense / (ShieldDefense + 500))
  Guarded if GuardChance > rand(0, 1)

• Only the shield counts. Weapon defence from armour, rings or buffs does nothing here, but scrolls on the shield do.
• Any shield gives at least 5%, and 500 weapon defence on it gets you to 50%.
• A Red Cross Shield (110) blocks 18.0%. The Gold Ancient Shield (192), the best the release has, blocks 27.7%.

Try itYour shield's guard

Your shield

Shield

×

Shield weapon def−+

Red Cross ShieldWeapon def 110

18.03%

Guard chance

About 1 regular attack in 6 is blocked outright.

Guarded 18.03%Gets through 81.97%

For 10%

56

For 25%

167

For 50%

500

Pick a shield, then type its real weapon defence if you have scrolled it.

A Hermit skill from CoT2's third job. The release still has the check, hard-coded to the skill and to the Assassin line, but nobody can learn it.

Only for Assassin, Hermit and Night Lord, with a claw:
  Guarded if ClawGuardBlock / 100 > rand(0, 1)

• It reads the same random number as the shield, and only after the shield fails. With any shield on (5% or better) it can never fire.
• It also gave 20 to 60 weapon defence with a claw equipped.

IncomingDamage = MonsterAttack × (1.1 + 0.4 × rand(0, 1))

• MonsterAttack is its physical attack for a regular attack and its magic attack for a skill attack, after its own buffs.
• An Orange Mushroom has 17 attack, so its hits come in between 18.7 and 25.5.

Defense = Weapon Defense for a regular attack, Magic Defense for a skill attack

DamageTaken = IncomingDamage × (1 − Defense / (Defense + 2 × IncomingDamage + 300))
              − Defense / 25 − PlayerLevel / 10

• Two cuts: a share of the hit that shrinks as the hit grows, then a flat Defense / 25 and Level / 10 off the top. The flat part is what makes small hits tiny.
• A level 30 with 100 weapon defence takes 7 to 12 from an Orange Mushroom, 9.6 on average.
• Jr. Balrog's 972 attack against a level 60 with 300 weapon defence: 934 to 1,315.

DefenseScale = 5 × PlayerLevel + 200 + 1.2 × IncomingDamage
DamageTaken  = IncomingDamage / (1 + Defense / DefenseScale)

Try itYour defence, both builds

The monster

Monster

×

Attack

RegularSkill

You

Your level−+

Weapon defence−+

Orange MushroomLv 8 · Attack 17

9.6

HP per landed hit

From 18.7 to 25.5 incoming, before your defence.

Release7–12avg 9.6

Release

CoT214–20avg 17

CoT2

The release takes 7.3 less per hit than CoT2 did here.

Before Invincible and element. Assumes the hit landed.

The Cleric buff. It takes a share off a regular attack after your defence.

Only for Cleric, Priest and Bishop, and only on a regular attack:
  DamageTaken = DamageTaken × (1 − InvincibleReduction / 100)

• A skill attack skips it, as the tooltip says: physical damage only.
• The values below are the skill’s own rows, read out of each client.

DamageTaken = DamageTaken × (1 − ElementResist / 100)

• Works on regular and skill attacks alike, straight after your defence, when the resist is above 0.
• The client reads it from four buff slots with no skill tied to them. The skills that look like they fill them, Elemental Resistance and Partial Resistance, are third job, so only CoT2 had them.
• Release monsters whose skill attack carries an element: Red Drake (Fire), Tauromacis (Lightning), Taurospear (Lightning) and Jr. Balrog (Fire).

DamageTaken = clamp(DamageTaken, 1, 50000000), truncated

DamageTaken = 0 if the hit missed or was guarded

• A hit that lands always costs at least 1 HP, however much defence you have.
• A guard throws the whole hit away. The client still works the damage out first, then drops it, the same as for a miss.
• A monster skill attack takes another path: it always lands and is never guarded.
• There is also a fixed-damage path that skips your defence and this clamp. These steps are the ordinary hit.