Press left and right and click left and right. Glitch through the obstacles by clicking on the right side of the screen while pressing right at the same time or vice versa. (My HS=21 on difficulty 1, 18 on difficulty 10) Press 1,2,3,4,5,6,7,8,9,0 to change difficulty. (0 stands for 10) ONLY PRESS IN FIRST SECOND WHERE NO OBSTACLES SPAWN
This will not work on mobile. See Cavern Trouble. https://scratch.mit.edu/projects/283939596/