New project - Spaceman demo

We've started working on a new side-scroller flash game. The title is not spaceman, but I called it so for now because it sounds cool. As usual the official title will be decided later, but it will probably have something to do with space or oxygen. Basically you're an astronaut stranded on some random planet, and you travel through vortexes to find your way back to Earth, except there is no ending in this game, so you just keep on going until you're dead.

The complication is you only have limited amount of oxygen so you need to collect oxygen tanks to survive. Oh, and there are also harmful aliens that will try to attack you and take oxygen away from you, or more precisely from your oxygen tank in your backpack. How and why? They are aliens so they can do whatever the hell they want. I haven't completed all the graphics yet, so aliens are just circles for now. Anyhow, I've attached the game in progress below.

Controls:
Spacebar - Jump
Left and Right Arrows - Movement