Ruifo is working on airport scenery in Papua where Susi Air flys to. There is a thread in the X-Plane Forum with all information.
Here is some important information from that link related to the landing strips and airports that he has created:
I’ve been practicing taking off and landing at WX37, Beoga airstrip. It is extremely difficult, probably as much because it is so difficult to spot from the air. It also has a 2% pitch but it seems much steeper than that to me, not only landing on it but seeing a video of a real plane landing there.