Elden Ring - optimized coop table

coop_a.md

Zone / Boss	Rune Level (RL)	Regular Weapon (+X)	Somber Weapon (+Y)
Limgrave (West & East)	10–30	+1 to +3	+1
- Margit, Fell Omen	20–30	+2 to +3	+1
Stormveil Castle	30–40	+3 to +6	+2
- Godrick the Grafted	35–40	+4 to +6	+2
Liurnia of the Lakes	40–60	+6 to +9	+3 to +4
- Red Wolf of Radagon	45–55	+6 to +8	+3
- Rennala, Queen of the Moon	50–60	+8 to +9	+4
Caelid (South)	60–70	+10 to +12	+4 to +5
- Starscourge Radahn	65–75	+10 to +12	+5
Altus Plateau	60–80	+12 to +15	+5 to +6
- Draconic Tree Sentinel	60–70	+12 to +15	+5
Leyndell, Royal Capital	80–100	+15 to +18	+6 to +7
- Godfrey (Golden Shade)	85–95	+15 to +18	+6
- Morgott, the Omen King	90–100	+18	+7
Mt. Gelmir / Volcano Manor	80–100	+15 to +18	+7
- Rykard, Lord of Blasphemy	90–100	+18	+7
Mountaintops of the Giants	100–120	+18 to +21	+7 to +8
- Fire Giant	110–120	+20 to +21	+8
Crumbling Farum Azula	120–150	+21 to +24	+8 to +9
- Maliketh, the Black Blade	130–150	+24	+9
Miquella's Haligtree	120–150	+24 to +25	+10
- Malenia, Blade of Miquella	130–150	+25	+10
Mohgwyn Palace	120–150	+24 to +25	+10
- Mohg, Lord of Blood	130–150	+25	+10
Siofra River / Nokron	50–70	+8 to +12	+3 to +5
- Valiant Gargoyles	60–70	+10 to +12	+5
Deeproot Depths	90–110	+15 to +18	+6 to +7
- Lichdragon Fortissax	100–110	+18	+7
Consecrated Snowfield	120–150	+21 to +24	+9 to +10
- Astel, Naturalborn of the Void	120–130	+21 to +24	+9
Endgame (Final Bosses)	120–150	+24 to +25	+10
- Radagon / Elden Beast	140–150	+25	+10

coop_b.md

Zone	Rune Level (RL)	Regular Weapon (+X)	Somber Weapon (+Y)
Limgrave (West & East)	10–30	+1 to +3	+1
Stormveil Castle	30–40	+3 to +6	+2
Weeping Peninsula	20–40	+2 to +4	+1 to +2
Liurnia of the Lakes	40–60	+6 to +9	+3 to +4
Raya Lucaria Academy	50–60	+6 to +9	+4
Caelid (South)	60–70	+10 to +12	+4 to +5
Caelid (Dragonbarrow)	70–90	+12 to +15	+5 to +6
Altus Plateau	60–80	+12 to +15	+5 to +6
Leyndell, Royal Capital	80–100	+15 to +18	+6 to +7
Mt. Gelmir & Volcano Manor	80–100	+15 to +18	+7
Siofra River & Nokron	50–70	+8 to +12	+3 to +5
Ainsel River & Lake of Rot	70–90	+12 to +15	+5 to +6
Deeproot Depths	90–110	+15 to +18	+6 to +7
Mountaintops of the Giants	100–120	+18 to +21	+7 to +8
Crumbling Farum Azula	120–150	+21 to +24	+8 to +9
Consecrated Snowfield	120–150	+21 to +24	+9 to +10
Miquella's Haligtree	120–150	+24 to +25	+10

xxx.md

Boss Name	Location	Recommended RL	Smithing Level	Somber Level	Co-op Min RL	Co-op Max RL
Margit, the Fell Omen	Stormveil Castle	20–25	+3–+4	+1–+2	13	38
Godrick the Grafted	Stormveil Castle	30–40	+4–+5	+2	26	54
Rennala, Queen of the Full Moon	Raya Lucaria Academy	50–60	+8–+12	+4–+5	44	76
Starscourge Radahn	Redmane Castle (Caelid)	60–70	+12–+15	+5–+6	53	87
Morgott, the Omen King	Leyndell Royal Capital	80–90	+15–+20	+6–+8	71	109
Rykard, Lord of Blasphemy	Mt. Gelmir	80–100	+15–+20	+6–+8	80	120
Malenia, Blade of Miquella	Haligtree	120–150	+24–+25	+9–+10	125	175
Mohg, Lord of Blood	Mohgwyn Palace	120–150	+24–+25	+9–+10	125	175
Maliketh, the Black Blade	Crumbling Farum Azula	120–150	+24–+25	+9–+10	125	175
Godfrey/Hoarah Loux	Leyndell (Ashen)	120–150	+24–+25	+9–+10	125	175
Radagon/Elden Beast	Elden Throne	120–150	+24–+25	+9–+10	125	175

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Notes:

1. Co-op Range: Calculated using the formula:
   Host Level ± (10 + 10% of Host Level). Values are rounded for simplicity.
2. Weapon Levels:
   • Regular Smithing Stones go up to +25.
   • Somber Smithing Stones go up to +10.
3. Scaling: Late-game bosses assume near-max weapon upgrades due to high defenses.
4. Flexibility: Co-op ranges are approximate; players can often succeed outside these ranges with skill or optimized builds.