A friend can take over one of the ships allowing you to work together to overcome the challenge. Just make sure he doesn't end up sending even more bullets in your direction.
Two by One is a Shoot'Em Up that tasks you with controlling two ships simultaneously in order to progress. Enemies that would be invincible with a single ship become beatable with two. Threats that'd fill the screen with bullets disappear before they can shoot a single one.
Yet at the same time you have twice as many weak points. A safe spot for one ship might not be safe for the other, and a single hit on one of them means death for both.
This page contains co-op info for Two by One on the PC. All information about Two by One was correct at the time of posting. Information is subject to change. If you see any errors please email us.