The atmosphere is good, it reminded me a little of LIMBO. I was genuinely shocked upon meeting the other person. The only thing i didn't really like was the walk cycle, it could be smoother.The way he pauses after every second step bothered me.
I covered the floor with proxies and launchers, covered the ceiling with turrets, covered the walls with sentinels, and placed a full row of buzzsaws at the lowest possible altitude.
Then this became an idle game.