In video games, like Diablo, the killing power of our characters can be modified by the skill set (选技），itemizations (配装）， attribute allocations (加点）or more mechanics (depending on the game).
Given one game, a build is a thorough plan/strategy that exhaustively dictates the execution of all power related game mechanics, with minor variations.
The question is how do we translate "build"?
I think "攻略‘ is a close one. But it means "guide" which is a superset of "build". A guide can contain multiple builds. Or a very detailed explanation of one build. But a build usually only describe how we utilize all the game mechanics without explaining why.
In the first paragraph, I listed some subset of "build" such as 配装. Obviously, they are not adequate.