Yeah, I couldn’t make up my mind for the control scheme. I ended up going with absolute controls as I found I could side strafe and disengage/engage quicker this way. Still haven’t figured out how to get the hotkeys to work for items. It seems to bind sometimes and then not sometimes as well. Luckily the pace is such that usually I can esc pause and do what I need. Only made it to level 7 though so far.
Important tip: There are multiple levels on some floors. You can see the height map layout in the top left corner when you hit tab to zoom in on the map.