Finished this little runner.
Run from the slime, eat sweet blue berries to refill sprint (shift) and yellow berries to keep your weight down.
My UI is a bit odd. Press one of the bushes to start playing. Each one is a difficulty mode (red being extreme and green easy).
On the downloaded version press the lights behind the tree to close the game.
EDIT: updated the game so the mouse works better on the menu.