The controls were a little frustrating for me, felt like half the time I was either firing things not where I wanted to or zooming in a direction that wasn't where I thought I was pointing. That and not really being able to aim upwards to scoop up previous resoures.
The gameplay itself was interesting. It had a claustrophobic feeling despite it being a wide open ocean space and the darkness made you feel something might be lurking out there which added a certain tension to it even without the air supply.