The 6DOF movement works great! I do feel like it's a bit disadvantageous for fights in "regular" spaces like rooms, because you end up in everyone's line of sight in cases where it would be more optimal to just play it like a cover shooter. I really liked using it in the exterior fights though, especially while changing from floors to walls and fighting vertically. Maybe it could be enabled only on certain fights / locations, so that you can more finely tune each encounter based on movement possibilities? idk.
I also feel there's way too much info on screen without a clear hierarchy so it was tough for me to keep track of my ammo / health / etc, maybe changing position / size / color for the things the player needs to know at all times would help a bit.
As a non-gameplay sidenote, the cutscenes look great as well!