Hand Independence
As you will almost immediately find, the clear difficulty is the rhythm of this piece: 3 vs 2. Without much experience with this particular polyrhythm, the brain will struggle to align it intuitively. You will need slow and thoughtful practice to teach your brain how the hands interact to achieve it.
You’ve encountered a single instance of this in Gollum’s Theme two pieces back but in this piece, it is the central unifying motif. Prioritize learning this rhythm extremely well with just the first segment of notes before moving on. It is the key to this whole piece.
This piece is relatively short and repetitive, so I recommend learning it in its entirety. You can find the rest of its tutorial parts here.