How do you unlock medals in Henry stickmin infiltrating the airship?
Of course there are achievements for unlocking all endings, fails, and bios. Here are the other ones:
Biggol Sword: In the PBT (Pure blooded thief) path, find a key left on a book next to a security computer. Later, when you are in the brig, click on Dave Panpa's cell to unlock it. In the next room, Dave will fall from the ceiling and drop a flash drive. Click on it. Then go to the Center for Chaos Containment and click on the flash drive. You will need to remember the password it gives you. Go to the first part in GSPI (Government supported private investigator) and choose the option "Vacuum." Once Henry is inside, there will be a panel on the back wall. Click on it and enter the code from before. Now go to the third part of RPE (Rapidly promoted executive)
Barnyard Blitz: When you are in the air duct, choose the [Make an animal noise] option, giving you the achievement
Buttery Snack: When you confront Reginald, choose the "Parachute" option, which will lead to a fail. The fail screen will read "Butterfingers." Click on it to get the achievement
Gold: Go to the last part of GSPI and choose the "Banana Bomb" option, resulting in a fail. On the fail screen, click on where it says "Banana"
Famous Movie Line: Go to the records room in the GSPI path and choose the option "Ninja Star" resulting in another fail. The fail screen will show a quote from a movie. Click on the letters to spell out "Mulan"
Bound to the Earth: In the RPE path, choose the "Yo-Yo" option and defeat the Right Hand Man
Last Reverie: Again, in the RPE path, choose the option "Dirk" and defeat the Right Hand Man
You Win!: Get the fake ending, LQL (Lightning Quick Larcenist)
braaagghh..: During the RBH (Relentless bounty hunter) ending screen, click on the sun
LOLOLOL!!11: Go to the brig, and use the panel, resulting in a fail. Hover your mouse over the text on the fail screen to earn the achievement
BEEEEEE: During the RPE ending screen, click where it says "TF2" on the computer
