In Lords Mobile Wall Durability I research increases your wall HP boost. It is found in the upgrade defenses tree.
There are 10 levels and once maxed your wall HP will increase by 135%. You need to have researched wall repair I before you can unlock this ability.
The table below has the resource cost and time to upgrade each level. It also shows the might and rewards granted. You can find out your own research time by using our research calculator.
Wall Durability I Research Requirements
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