Described as an "action-survival space-shooter simulation", Miner Wars 2081 has finally entered the beta stage, and with that comes a co-op gameplay video.
According to developer Keen Software House, the footage will "eat into your soul and leave you praying for more", and "tear your brain cells apart from your optic nerves, and you'll love every second of it". So...yeah. Before watching, note I take no responsibility for eye, brain, or soul damage.
If this seems up your alley, you can hit the source to pre-order and beta test.