Customization and Mechanics are spot on as a sort of Armored Core Gaiden. But the gampaign is lackluster and there is a huge lack of challenging content to push the player to get even close to mastering or caring about most of the mechanics.
Even multiplayer 'super bosses' are far too easy compared to the Armored Core Verdict Day counterparts they are inspired by and there is hardly reason to keep optimizing your builds.

The coop roguelike dungeon exploration mode feels like the true endgame, which is a very strange dynamic for this kind of game. This makes the whole feel more like an experiment than a finished game. 1v1 multiplayer is not enough of a push to keep playing. Big missed potential here.