Expert Pilot - 10
Play 6 consecutive stages of Intergalactic Odyssey without losing any lives.
See "Master Pilot."
Master Pilot - 15
Play 9 consecutive stages of Intergalactic Odyssey without losing any lives.
These achievements require that you complete consecutive stages of Odyssey mode without losing a single life (crashing any planes). Start on Stage 1 to make this achievement easier, as you need to complete 9 in a row without losing a life, and the stages just get more difficult as you progress.
Completing stages is not related to score or landing a certain number of planes. It is only based on time, which is shown by the draining bar at the top of the screen. Knowing this, you can use it to your advantage to make earning these achievements (and for just completing the later stages) quite easy.
The technique involves exploiting the slow yellow ship that drops tiny yellow ships that remain stationary. The game spawns ships based on how many other ones you have on screen and whether you have already drawn lines to the runways for them. Basically what you want to do is anytime one of the large yellow ships spawns, draw a long path for it around the screen so it drops all five of the little yellow ships (each one only drops 5). Then organize the little ships in a cluster near the corners of the screen. Try not to make them too close to the corners because other planes can still spawn there. Pay particular attention to ships spawning near your clusters (the "!" indicators show up where ships are spawning, look for those). Make sure to move the spawning ships on paths away from your clusters. With the ships that do spawn, it is easiest just to move them around the screen killing time. If you land them, more planes will spawn. The picture below shows how it should look. One my first attempt, I got all the way from Stage 1 to 12 without losing a life and eventually just crashed some planes to end it out of boredom.
The Swift Swarm bot is also good to equip when playing Odyssey mode, especially when going for this achievement. Swarm ships (small green ones that look like bombs) are some of the most difficult to handle due to their sheer number and slow speed.
Procrastinator - 10
Complete Stage 1 of Intergalactic Odyssey mode without landing or crashing any ships.
Just load up Stage 1 and do not land any ships or crash any, letting the time run out. This is fairly easy. Only slow red ships will spawn. The round lasts 1 minute and only becomes mildly challenging during the last 10 seconds when about 10 ships are on the screen total. Be careful not to accidentally land any planes as you are directing them.
MISCELLANEOUS ACHIEVEMENTS (9 for 100
The following 9 achievements are related to completing miscellaneous cumulative requirements or task and can be completed on any level (except "Malt Runway 1 / 2").
Certified Pilot - 5
Complete Flight School.
Flight School is the tutorial and is available in the game mode selection screen. It is simple and only takes a few minutes to complete. You might as well get it out of the way first.
Landing 1,000! - 5
Land 1,000 ships on any runway.
See "Landing 10,000!"
Landing 10,000! - 10
Land 10,000 ships on any runway.
You need to land a total of 10,000 ships in the game, across all the game modes, motherships, and runways. Don't worry too much about this one as you will need far more than 10,000 to complete the other achievements. Ships come at a much faster pace in this game compared to the original, so this one will come quick. You can check your progress towards 10,000 from the Main Menu by clicking on "Flight Log."
Finger Zinger - 20
Land ships on all three runways simultaneously.
This achievement requires that you land one ship of each color on the three corresponding runways at the same time. The time frame is not that strict, so do not worry about getting the timing exact. This will likely come without even trying through normal gameplay. However, this can easily be earned on an early stage of Odyssey mode with a little planning. Just stall ships and eye them up so they land on each runway simultaneously.
Full Screen Ahead - 20
Have 20 ships on screen.
You need to have a total of 20 ships on screen at the same time. This would be quite challenging to do under normal circumstances, but fortunately there exists some techniques to make this easy.
Basically you just exploit the large yellow ship (see "Master Pilot" for this technique) and the large green ship, either together or separately, depending on exactly what spawns. Cluster the small stationary yellow ships in a corner of the screen, as many as possible. Use the large green ship to quickly create small green ships that follow the same path. Just work with what spawns. See the image below for an idea of what this can look like. I have 15 small yellow ships in the top left corner, and have started spawning small green ships. I could easily get 25 total ships or more on screen with this set-up.
NOTE: The long snake-like chains of yellow ships only count as ONE
ship on screen, regardless of how many ships make up the chain (though they do count as multiple ships for scoring and multipliers). This makes these the worst when going for this achievement. Get them landed as fast as possible.