Tricky airport but you did really well! Your landing reminded me of landing on Swiftsure Glacier. You land uphill just like that. https://www.youtube.com/watch?v=xu2fX1t_6iE
They do insist on an altiport qualification before you are allowed to land there.
Either a general one or a single airport authority.
I have flown just round the corner from Courcheval at Meribel on a Jodel Mousquetaire with wheel skis. That was with an instructor. A lot of fun and highly recommended!
Wait!, I wanted to see you take off on RWY 22! That would have been really exciting!
Seriously, that is an amazing location - I'm sure the video does not do it justice.
Georges - thanks for sharing. Question: about how much power is required right at touchdown?
I think about 30 to 40% power at touchdown.
The Piper Malibu is still here but the damages seemed very extensive