- Estimated achievement difficulty: 3/10 [Achievement Difficulty Rating]
- Offline: 16 
- Online: 0
- Approximate amount of time to 1000: 1.5-2 hours [Estimated Time to 100%]
- Minimum number of playthroughs needed: 1
- Missable achievements: No
- Does difficulty affect achievements: No
- Unobtainable/glitched achievements: No
“Aery - Calm Mind is an interactive game experience that is designed to relax your mind and soul. You jump into the role of a little bird, explore beautiful landscapes and collect the missing feathers of your little bird friend. Because there are no enemies or any danger of any kind, you will be able to lean back and enjoy the scenery and the sensation of flying. It is a great game for relaxing and calming down after an exhausting day full of hassle.
Every level has two parts; a first introduction into the overall theme and a second one that gives a little more time to play around and to enjoy the beauty of the area. Of course, you can always select the level that you feel helps most to relax yourself. Most levels can be finished quite quickly so that you can freely choose spend time exploring the environment but you don’t have to stay for too long if you are just looking for a short moment of peace and enjoyment.” - microsoft.com
Full credit for the 100% video walkthrough goes to TheBlueDragon.
The object of the game is simple; fly around each of the 16 levels and collect a certain number of feathers. The controls are basic; controls the flying and rotates the camera (although you can do everything with just the ). and lets you do barrel rolls. Also, all of the achievements are story-related so by completing the game you earn the full 1000.
Since all of the levels are unlocked from the start, you can play them in any order you wish. After each two-level set, the game returns to the main menu so you can select the next level. Unfortunately, the game does not identify which sets have been completed, and if you leave the set during the second level, if you return to it, you must play the first level again. Also, if you have played the previous games, you might notice that the majority of the levels are rehashed from earlier games.
Most of the feathers are out in the open and easy to find, but there are some that are obscured from view or blend into the background making them difficult to see. Luckily they give off a bluish-green glittering effect which can generally be seen from a distance (on most levels). Some of the levels are more expansive than others, too, so you may be searching for a while. If you have any issues finding feathers, try flying low or high and look above or below as sometimes feathers are more visible against the environment or sky. The game has a difficulty rating of 3/10 for that very reason and you’d figure after five games, the developers would have noticed and addressed this. For reference, there is a complete walkthrough video in Castles of the past II (65G). And although you need to collect 25 feathers (or 40 on two levels), there are more than that amount in each level.
If you crash, you are placed back at the starting position, but you retain all the feathers collected up to that point. Luckily, the flying mechanics are simple to learn so you shouldn’t have much trouble. Also, there is no way to speed up or slow down; you travel at a consistent speed, so if you miss collecting a feather, circle back and try again.
Aery - Calm Mind follows the previous titles in this series as yet another relaxing and stress-free game, but with the feathers blending into the environment on some levels, it can be a little frustrating. Enjoy your 1000!
[XBA would like to thank bLaKgRaVy for this Roadmap]