Very easy now, I unlocked it first time with this method.
Setup a game of Endurance on Easy Difficulty.
Your first priority is to try and pot a ball with the minimal cue movement, You want to go for a ball that is literally in line with your cue, and the pocket.
Second, Try and go for balls that are nearest a pocket, do NOT try to become a hero and impress no one when you miss a long shot, you have no aiming aid so it is difficult to judge the angle you need.
to make the cue movement much more sensitive, it slows down cue movement.
I would also recommend only using the
and push it straight up for default power.
You are also now able to store your "Ball Stop Dropper", It will appear on the bottom right of the screen saying "Press
" when it is available. You stop balls dropping for 10-15 seconds.
The maximum amount of balls you may have on the table is 24, I managed to stay around 8/9 balls on easy difficulty. I actually made it to 20 mins and then let the clock run out.
Hope this helps.