Super Cloudbuilt

You can get this one anywhere there is a turret pointed towards a Checkpoint Flag but a certain section in "What’s To Come" makes this one very easy to obtain. If you progress through the level normally, at one point you will enter the central tower through a hole guarded by 2 turrets. Avoid the Checkpoint Flag and go up the slope close to the right hand wall and watch as mines slowly roll down to your location. If you stand between the flag and the mines, the mine's blast will propel you past the Checkpoint Flag. If done right, if you go back to the flag, it will say "Reactivate this Checkpoint" instead of activating it automatically. Here's a video of how it should be done.