Mercury Upgrades

Mercury Upgrades
Upgrade weapons with the Mercury upgrade path from +1 to a max level of +5. Requires the Mercurystone. A slight increase to DEX and lowers the STR stat. But it applies the Poison effect that can inflict poison against enemies that are hit. Further increasing it boosts the effect of the poison.

Mercury Upgrades is a type of Upgrade path in Demon's Souls and Demon's Souls Remake. Upgrade paths allow the player to ascend their weapons and shields to a specific path that grants unique buffs and effects.

Mercury Upgrades Information

Mercury Upgrades can be performed by Blacksmith Ed. A slight increase to DEX and lowers the STR stat. But it applies the Poison effect that can inflict poison against enemies that are hit. Listed below the table are the following Stats that scales per level for the Mercury upgrade path.

Note: Weapons upgraded to Poison can no longer be buffed with Spells like Light Weapon and Cursed Weapon or consumable buffs like Pine resin.

Level	Strength	Dexterity	Magic	Faith	Bonus
+1	E	D	--	--	Poison 120
+2	E	D	--	--	Poison 180
+3	E	C	--	--	Poison 240
+4	E	C	--	--	Poison 300
+5	E	C	--	--	Poison 360

Mercury Upgrades Requirements

This upgrade path requires the Mercurystone material and can be upgraded from +1 to a max level of +5. Each weapon that can be upgraded to the Mercury path requires a certain amount of Mercurystone. Listed below are the variations of the material and its location, as well as the compatible weapons for the Mercury upgrade path.