Yeah, that’s THE build. ^^
When you get it, you steam-roll the game. Every level begins to feel the same as you kill everything without even caring. So might as well tell you that you win ^^.
Maybe we should assume that you will have an OP build at the end, and so put VERY hard ennemies.
But personnally I would work on variety so that good builds aren’t so brainless. Play more with environment and movement. Then even with a good build, the game would still stay interesting.