This time, I am not going to detail all of the achievements, I will only highlight the hardest ones. You will eventually unlock all of the easy ones playing the game.

Keep the same aircraft in the sky for 3 minutes

This achievement is not that hard to unlock, but you have to work a little bit in order to do so.

I think the easiest way to get it is to select the first level and draw continuous holding patterns for the first aircraft that appears on the map. You should choose wisely the spot where you draw the circles so it does not interfere with landing trajectories for other aircraft.

Open all umbrellas simultaneously on the Stunt airfield

For this one, you have to use the yellow planes on the Stunt map. 4 or 5 of them are needed to open all of the umbrellas at the same time. The best way to do this is to draw trajectories that go back and forth over a specific sector that contains close umbrellas. Then, keep the other aircraft out of these sectors and you should be fine.

Land 5 helicopters in a row on the Windy airfield

Holding patterns will enable you to land 5 helicopters in a row on this map. Make sure that you draw the circles away from landing thresholds.

Land no aircraft for 3 minutes

This one is difficult and requires a little bit of setup. I think choosing one of the largest maps is the best way to begin with.

Then, you have to use holding patterns for each aircraft. You should draw the patterns starting from the center of the map for the first aircraft, going to the edges for the incoming ones.

Initially, you will have enough time to draw the maximum amount of holding patterns (a dot will appear when you reach the limit), and you should do it. But, when there are too many aircraft on the map, you will not be able to do it. So, at this point, just try do draw 3 or 4 circles for the aircraft that are going to leave the holding pattern.

In the end, there will be so many aircraft on the map that you will not be able to draw patterns at all. So just watch out for the safety nets and avoid collisions until reaching the 3 minutes mark !

Land 200 aircraft in a game

In fact, you do not have to land 200 aircraft in a single game, you have to score 200 points.

This means that the easiest way to unlock this achievement is to select the stunt map and use the yellow planes to score 16 points for one landing, flying through all of the gates.

I think you will not be able to handle more than 3 yellow aircraft at the same time if you want to go through all of the gates. So, do not hesitate to land a stunt aircraft for 0 point in order to cope with the 3 other ones.

Regarding the remainging aircraft (the non-yellow ones), try to land them avoiding the gates sectors and so your stunt aircraft.

In the end, before reaching the 200 points, there might be too many aircraft to collect easy points with the gates. From there, you should just drop the gates and land aircraft until you reach 200 points !

Play 200 games in total

Depending on your skill, you will not need 200 games to unlock all of the other achievements.

So, to get this one, you can just play the game for fun or you can do it the quickest way : start a game on the smallest map and collide two aircraft into each other as soon as possible, select "Retry", and do it again, and again, ... You do not need to land a plane to increase the amount of games that you played.