Here is the full list of all 47 Windstorm Ostwind - there are Aris Arrival achievements.
Ari finds a new home
Ari confronts Isabell with her crimes and saves the day
Ari and Windstorm ride to Maria Kaltenbach but are betrayed by Adrian
Ari gets help from Adrian to find a safe passage to Maria Kaltenbach
Collected all band posters for Tinka
Collect 50 apples overall
Ari gets help from Sam and breaks into Kaltenbach Estate to find proof about Isabell's betrayal
Ari, Tinka and a rueful Sam act together to stop Isabell
Found the old bunker and dared me inside
Fed apples to Windstorm and used the sprint boost for 600 seconds
Destroyed all billboards
Found a very strange rock
Found the waterfall with the permanent rainbow
Found the graveyard
Found the oasis
Found the Airfield
Found the old phone booth in the forest
Got Mr. Kaan to fully trust you
Completed the "Fast Falcon" challenge in under 30 seconds
Reached the bottom of the stripmine
Reached the center of the crop circle
Ari gets help from Dr. Anders and finds out about Isabell's betrayal
Ari and Tinka try to save a new horse from Isabell only to walk into a trap
Ari and Tinka find out more about Isabell's plans
Shot 100 arrows
Fed Windstorm until he was at full energy
Ari has an unexpected encounter with the local police
Ran more than 25 km with Windstorm
Found Mr. Kaan's home
Ari and Tinka plan to stop Isabell together
Ari learns how to increase her friendship to Windstorm
Stood on the old castle tower
Ari is mentored by Mr. Kaan
An unexpected event forces Ari and Windstorm to flee from Kaltenbach Estate
Ari meets potential new friends
Jumped more than 15 m
Obtain all trophies.
Found the abandoned farm
Jumped at least 500 times with Windstorm
Got Jenny to fully trust you
Got the animals to fully trust you
Got Mika to fully trust you
Got Sheriff Kiesel to fully trust you
Solved all phone box riddles and reached the House of Enigma
Earned the full trust of everyone
Collected all scarecrow hats
Found all graffitti