I got super tired when I started typing the Fleeing The Complex secret achievements, so don't expect many paragraphs in this steam guide.

This guide actually took me more than 24 hours to make.

In sneaky escapist ending click the sun and you will get the achievement.

Go to escaping the prison and choose the following: Drill, Crowbar, Up Arrow, Up Arrow.

If you want these achievements that I'm about to show than please switch to Stealing The Diamond.

Choose the following: Sneak In, Pick, Plane, Left Arrow, GoodBall and then Close or click Ok, on any of the errors you can.

Choose Sneak In, and after that choose Jumble Hoppers 3 times.

Choose the following: Sneak In, Teleporter, Penny, Wormhole Rifle and than click on the fail sentence.

Choose the following: Sneak In, Teleporter, Penny, Wire, Hammer, Plank, Snap Neck and you should get the achievement after that.

If you want any more secret achievements, than please go to Infiltrating The Airship if you want any more secret achievements!

Choose the following: Earpiece, Vacuum, Glue, Robo Helper, Bone Melt, Spook, Make an animal noise.

In relentless bounty hunter ending click the sun and you will get the achievement.

Choose the following: Cannon Ball, Chair, Eject, Beans, Rocket Jump, Dirk, Tools, Glider, Parachute, and than click the fail text.

Choose the Following: Earpiece, Glue, Robo Helper, Bone Melt, Spook, Reroute the power, Banana Bomb, and than click on the Red text.

In the rapidly promoted executive ending click TF 2 on the computer and you get the achievement.

Choose the following: Earpiece, Glue, Robo Helper, Bone Melt, Ninja Star. and than click the fail text.

Choose Grapple Gun and after that choose Wait, than look on top of the book to the left of the computer, click the golden key and it will say Key Get! than choose Vent, and than choose Leap, if you clicked the key than you would unlock the security guard, Dave Panpa, after that Choose Paperizor and if you look in the background you will see the security guard falling out of a vent with a flash drive, click the flash drive and it will say Flashdrive Get! and than Choose Shrink n' Grow, and than after that choose Power Armor,
and than wait until you have 3-4 disks and a flash drive at the bottom that you can choose from, choose the flash drive and it will tell you the numbers 1214, than go back to the beginning and Choose Earpiece, and than choose Vacuum, and click on the key pad in the background, type in the code you saw on the flash drive and than a door would open, go back to the beginning again and choose Cannon Ball, than Choose Chair, than Choose Eject, and you will see a cut-scene that Henry finds the open door and finds the Biggol Sword, after that you will get the achievement.

Choose the following: Grapple Gun, Wait, Vent, Leap, Hack.

If you want any more secret achievements than switch the game to Fleeing The Complex.

Click Henry before he falls every time and you will get the achievement.

In Presumed dead ending click the moon and you get the achievement.

There are 4-5 stick figures in Fleeing The Complex that you can click, click all 4-5 of them and you get the achievement.

Go to the last choice before the Convict Allies ending and click the left side of the Rock in the distance, it will show you Waldorf and you would get the achievement

Choose the following: Boost Up, Left Arrow, Whoopee Cushion, Power Jump, Balloon, Plunger Boots, and than click the fail text until it says "Aaaprprprrprprprprprprprprprprprprr" after that you will get the achievement.

Choose the following: Boost Up, Up Arrow, Synchronized Takedown, The Force.
and than choose Crossbow and Sniper Rifle. and click the fail text and wait until the end of the replay to get the achievement.

Choose the following: Charge Tackle, Acrobatics, Item and click the blue square with a building beside it, and in the fail Freddy will Jumpscare you and than you will get the achievement.

If you want any more secret achievements please go to Completing The Mission.

In the Capital Gains ending click the Sun and you will get the achievement.

Go to the Cleaned 'Em Out! ending and Choose the following: Magic Hat, Mannequin and click on the letter F in the fail text to get the achievement.

THIS INCLUDES COMPLETING THE MISSION!
Get all the fails and all the endings in Breaking The Bank, Escaping The Prison, Stealing The Diamond, Infiltrating The Airship, Fleeing The Complex, And Completing The Mission, after that go to the chaos containment part in the Toppat 4 Life ending, after that click on all the sticky notes, click the button Fix under the Multiverse Imbalance, and wait until you get sent back to the title screen.

This took me more than 24 hours, bye.