This game is simple - avoid obstacles and go as far as you can. Your vehicle (rectangle) is rotating, but you can control the rotation speed to some degree, and you can temporarily suspend the rotation, which is in most cases necessary to pass an obstacle.
Use left/right arrow or a/d keys to move horizontally, up/down arrow or w/d keys to rotate faster/slower and space or enter key to temporarily suspend the rotation.
On mobile, this game is harder... press the left part of the screen to suspend the rotation, and on the right part, pan left/right to move and pan up/down (over 30px) to control the rotation speed.
Good luck!