There are already many guides for Limbo on steam so why make another?
Well well well, let me tell you. I've personally found that most guides for this game are either over complicated or way too simple, which in turn usually end up causing more problems then they're meant to solve. This can be quite a pain if you're just trying to find a quick tip to discover a secret. So without further ado, here's a guide that doesn't do all that. Enjoy!

At the very beginning of the game when you first wake up go left.

In chapter four after dragging the box under the rope, climb to the highest tree branch you can and run and jump off the left end of it grabbing a second rope. Swing back and forth a couple times then jump off the left and climb up the small branch.

First of all, that what she said.

In chapter nineteen after letting your little worm friend burrow into your skull and passing the level, wait until the water stops rising and walk to the left where the piece of pipe will still be floating around. Next walk to the very edge of the platform and grab the pipe, drag it all to way to the right pushing it off the platform and jumping onto it. Now run and jump off the left side grabbing a rope you could barely see before. The rope will tug on a pipe dropping an egg out.

in chapter twenty four drag the box on the left to the lifting platform. make sure you have the lift down, then turn it on lifting the box up. once at the top push the box onto the platform to the right and send the lift back down. once it's all the way down turn the lift on again and quickly climb onto the box then jump onto the top of the lift and wait. when the lift is high enough, run and jump off the left end grabbing a rope, tugging on a pipe... Again. a juicy egg will fall out of the pipe.

in chapter twenty six climb back down the ladder and head right into the darkness. keep going until you find the egg.

in chapter twenty seven after completing most of the level and getting to the lever, don't pull it.
instead run and jump off the right edge of the platform and climb the cog. the egg will be on the other side.

in chapter thirty after getting rid of your brain worm stay on the conveyor belt and push a box forward until it's lined up so you can jump off the left end of it and grab the edge of the crusher when it's down. then wait for the crusher to hit the ceiling and then climb up over the edge and run to the left end, then as it's coming back up again jump off and grab the ladder. climb up and collect the egg.

in chapter thirty two after pulling the lever and heading right, go over to the crate and push it against the sparking wall. climb on top of the crate and jump off the left end, then climb up the ledge and jump right climbing up that ledge too. step on the egg.

in chapter thirty four make sure the elevator is up and then climb down to the ledge right under it. from there jump off the ledge to the right and grab the chain hanging from the bottom of the elevator. climb all the way down to the egg at the bottom.

in chapter thirty eight jump and hit the gravity switch then head left to the edge of the platform and fall higher up into a pocket with a pull-able platform. pull it out and an egg will fall out of it.

beat the game.

this can only be completed after you have gotten all the other eggs. back in chapter twenty six head down the ladder again and go back into the darkness on the right. go back to where you found the first egg there and the wall on the right will be gone if you've collected all the other eggs. head into the darkness past the wall and complete the whole secret level in there, it's almost all dark in there so I suggest turning up the volume so you can hear the audio cues better. once all that is done you will get the DING! achievement.

There's no easy way to get this achievement, as to do it you have to beat the game in one sitting with five or less deaths. My advice is to play through the full game at least once before trying to complete this challenge, as doing so will help you keep all the puzzles and traps fresh in your mind.

Thank you so much to everybody who read my guide,
it means a lot to me as i worked really hard on it! If this guide helped you make sure to hit the favourite button so you can find it again later ;)
See you next time!