This is level 2 of the New Tunnel.
Take advantage of the ramps, and jump off them as the Child. You could use the Duplicator and jump off a duplicate if you miss a jump. This level is not very difficult, and you should win with about 10 tries or less.
Under special circumstances where you are in a gap away from any tiles completely, which can happen given the platform distance, you may have to spam the jump button to jump off duplicates the second you create one.