Flat armour

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Combat level

Flat armour is a stat which modifies the damage a target receives from successful melee and ranged attacks, through subtracting the flat armour value from the attack's final damage roll. For example, if a target has 4 flat armour then an attack that would usually deal 10 damage would instead deal 6. Negative flat armour values will increase the damage a target receives, but again this only affects successful attacks. Attacks that miss will still deal 0 damage.

Flat armour primarily affects the player's standard attacks, and does not affect other sources of damage such as:

Magic attacks used by players, including from powered staves, and the Voidwaker special attack, intentionally ignore both positive and negative flat armour.[1]

Negative flat armour values typically encourage using weapons with faster attack speeds such as darts, or multi-hit weapons, as the flat damage increase is applied to each hitsplat separately. Meanwhile positive flat armour values encourage using slower weapons with greater max hit potential, or taking advantage of damage sources that aren't affected by flat armour like thralls.

Flat armour is also granted to a player's boat via a keel, with each 100 armour granting one flat armour. Unlike magic attacks used by players, magic attacks used by sea creatures do have their damage reduced by a boat's flat armour.

List of NPCs with flat armour

A monster's flat armour can be seen when using the Monster Examine spell on the Lunar spellbook. It is listed as 'Flat Armour' in the 'Defensive Stats' tab. The Monster Inspect spell on the Standard spellbook doesn't provide information about a monster's flat armour stat despite showing other information such as Elemental weakness.

MonsterMembersCombat levelHitpointsFlat armourExperience bonus
Amoxliatl (Echo)
Members
328650-25%
Amoxliatl
Post-quest
Members
263520-25%
Amoxliatl
Quest
Members
226400-20%
Armoured zombie (Defender of Varrock)
Melee (invasion)
Members
827510%
Armoured zombie (Defender of Varrock)
Ranged (invasion)
Members
827510%
Armoured zombie (Zemouregal's Base)
Melee
Members
827510%
Armoured zombie (Zemouregal's Base)
Ranged
Members
827510%
Armoured zombie (Zemouregal's Fort)
Melee, 1
Members
1059520%
Armoured zombie (Zemouregal's Fort)
Melee, 2
Members
1059520%
Armoured zombie (Zemouregal's Fort)
Melee, 3
Members
1059520%
Armoured zombie (Zemouregal's Fort)
Melee, 4
Members
1059520%
Armoured zombie (Zemouregal's Fort)
Melee, 5
Members
1059520%
Armoured zombie (Zemouregal's Fort)
Ranged, 1
Members
1059520%
Armoured zombie (Zemouregal's Fort)
Ranged, 2
Members
1059520%
Armoured zombie (Zemouregal's Fort)
Ranged, 3
Members
1059520%
Armoured zombie (Zemouregal's Fort)
Ranged, 4
Members
1059520%
Armoured zombie (Zemouregal's Fort)
Ranged, 5
Members
1059520%
Asyn Shade
Shade
Members
10090-30%
Asyn Shade
Shadow
Members
10090-30%
Blood Moon
Members
329500-217.5%
Blue Moon
Members
329500-517.5%
Body Golem
Golem
Free-to-play
506020%
Body Golem
Rubble
Free-to-play
506020%
Chaos Golem
Golem
Members
709430%
Chaos Golem
Rubble
Members
709430%
Cruor
Members
285500-25%
Drake
Members
19222522.5%
Dusk
First form
Members
248450-10%
Earthen Nagua
Normal
Members
128160-47.5%
Earthen Nagua
Reinforced
Members
128160-47.5%
Earthen Nagua
Weakened
Members
128160-47.5%
Eclipse Moon
Clone
Members
329500417.5%
Eclipse Moon
Regular
Members
329500617.5%
Elite Black Knight
Female
Members
1389077.5%
Elite Black Knight
Male
Members
1389077.5%
Fiyr Shade
Shade
Members
120110-30%
Fiyr Shade
Shadow
Members
120110-30%
Flawed Golem
Golem
Free-to-play
132510%
Flawed Golem
Rubble
Free-to-play
132510%
Frogeel
Members
10390-20%
Frost Nagua
Members
104120-40%
Fumus
Members
285500-20%
Gargoyle
Basement
Members
111105-20%
Gargoyle
Upstairs
Members
111105-20%
Giant rockslug
Members
867720%
Glacies
Members
285500-25%
Gorak
GWD
Members
149128-20%
Gorak
Level 145
Members
145112-20%
Grimy Lizard
Members
5075-20%
Guardian Drake
Members
376590315%
Jungle spider
Members
4450-20%
Jungle spider (Ape Atoll)
Members
3735-22.5%
Karil the Tainted
Members
98100-20%
Lizardman brute
Battlefront
Members
7560-20%
Lizardman brute
Standard
Members
7560-20%
Loar Shade
Shade
Members
4038-30%
Loar Shade
Shadow
Members
4038-30%
Locust rider
Lancer
Members
10690-22.5%
Locust rider
Lancer (Quest)
Members
6890-22.5%
Locust rider
Ranger
Members
9890-22.5%
Locust rider
Ranger (Quest)
Members
6890-22.5%
Mind Golem
Golem
Free-to-play
304010%
Mind Golem
Rubble
Free-to-play
304010%
Mutated Terrorbird
Members
178320-20%
Mutated Tortoise
Members
24744010%
Otherworldly being
Members
6466-20%
Phrin Shade
Shade
Members
6056-30%
Phrin Shade
Shadow
Members
6056-30%
Portal (Pest Control)
Blue, Intermediate/veteran
Members
N/A250-20%
Portal (Pest Control)
Blue, Intermediate/veteran (shielded)
Members
N/A250-20%
Portal (Pest Control)
Blue, Novice
Members
N/A200-20%
Portal (Pest Control)
Blue, Novice (shielded)
Members
N/A200-20%
Portal (Pest Control)
Purple, Intermediate/veteran
Members
N/A250-20%
Portal (Pest Control)
Purple, Intermediate/veteran (shielded)
Members
N/A250-20%
Portal (Pest Control)
Purple, Novice
Members
N/A200-20%
Portal (Pest Control)
Purple, Novice (shielded)
Members
N/A200-20%
Portal (Pest Control)
Red, Intermediate/veteran
Members
N/A250-20%
Portal (Pest Control)
Red, Intermediate/veteran (shielded)
Members
N/A250-20%
Portal (Pest Control)
Red, Novice
Members
N/A200-20%
Portal (Pest Control)
Red, Novice (shielded)
Members
N/A200-20%
Portal (Pest Control)
Yellow, Intermediate/veteran
Members
N/A250-20%
Portal (Pest Control)
Yellow, Intermediate/veteran (shielded)
Members
N/A250-20%
Portal (Pest Control)
Yellow, Novice
Members
N/A200-20%
Portal (Pest Control)
Yellow, Novice (shielded)
Members
N/A200-20%
Riyl Shade
Shade
Members
8076-30%
Riyl Shade
Shadow
Members
8076-30%
Rock Golem (monster)
Level 115
Members
1151002-97.5%
Rock Golem (monster)
Level 13
Members
13201-97.5%
Rock Golem (monster)
Level 154
Members
1541502-97.5%
Rock Golem (monster)
Level 27
Members
27301-97.5%
Rock Golem (monster)
Level 46
Members
46501-97.5%
Rock Golem (monster)
Level 76
Members
76701-97.5%
Runite Golem
Members
16512040%
Shade (Temple Trekking)
Members
140115-30%
Shade
Catacombs of Kourend
Members
140115-30%
Shade
Stronghold of Security
Free-to-play
159170-3-97.5%
Shadow Wyrm
Attacking
Members
259290210%
Shadow Wyrm
Idle
Members
259290210%
Skeleton heavy
Members
13011410%
Skeleton hero
Members
14611410%
Skeleton thug
Members
13011410%
Sulphur Lizard
Members
5050-10%
Sulphur Lizard (Deadman)
Annihilation
Members
7572500-10%
Sulphur Lizard (Deadman)
Permanent
Members
257500-10%
Sulphur Nagua
Members
98100-45%
Sulphur Nagua (Perilous Moons)
Members
98100-40%
Umbra
Members
285500-27.5%
Urium Shade
Shade
Members
140130-30%
Urium Shade
Shadow
Members
140130-30%
Veiled kraken
Members
210225150%
Wyrm
Attacking
Members
9712012.5%
Wyrm
Idle
Members
9712012.5%
Zemouregal Summon
Shade
Members
14135-30%

References

  1. ^ Mod Rach. "Poll 85 - Bridges, Boots, Ropes & Roots". Reddit. 17 September 2025. Archived from the original on 5 May 2026. Mod Rach: "Should be updated on the Wiki - magic attacks ignoring flat armour stats is intentional, not a bug 💜"

Source

Content from the Old School RuneScape Wiki (operated by Weird Gloop), licensed under CC BY-NC-SA 3.0.

Source siteOld School RuneScape Wiki
Canonical sourceFlat armour
Content licenseCC BY-NC-SA 3.0
License statusdeclared

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