You start out with a tri-rocket increase and a teddy bear on a ledge. You then get full ammo for tri-rockets and homing missiles. You get a shotgun capacity increase, and find a bear hiding under a rock.

You go around cliffs, face drones, dodge crates. You get a machine gun ammo and then face fly guys. You get plasma shotgun ammo, and find 5G gems that you can shoot down. There's a bear near here on the path.

Eventually you hit a river section with more fly guys, stairs, a big guy on a bridge over the previous area. There are yet more fly guys, a cloud path, more drones. The last teddy bear is on the path there.

Grab full homing missiles, and now you're up on a ridge over the previous path. Finally you hit the launch pad, get a tri-rocket capacity increase, and leave the planet!

Jet Force Gemini Walkthrough