Here's the second idea in the insane shred techniques series, to be honest the first one may be more advanced and technical to you and require more stretching plus mastering or be familiar with 8 finger tapping but what are you gonna do. 
This one is a sweep picking tapping lesson descending, what makes it particularly interesting is that it descends with slides on the A string which is definitively a new concept

How to play this technique
This is a C# minor arpeggio in three different inversions where the first is repeated one octave lower and it makes use of all four octaves on a guitar with twenty four frets. What you need to work on also if this is new to you its being able to pick sweep picking on the fret board to be able to play the last few inversions