Unfortunately you grow a bit too fast in this game. In its current state it feels like there shouldn't be a jump button, or a run button, you should just always be moving at full speed looking for an exit as fast as possible. The game likes to tease you by making you think the exit is right in front of you, but in reality its just very slow at loading the next section of the tunnel. While it is possible to win, the odds are stacked against you significantly.