It is best you figure it out on your own as this makes the game more fun, however those who are still struggling can look at this guide.
I noticed the low achievement-rate for these achievements and figured I would make a quick guide on how to get it seeing as no one else had really solved or posted about the solution or even hinting at it.

The "Secret" achievement is not actually hard to notice if you stop focusing on the puzzle, the level in question is 11A which is filled with traps.

Below is the solution, it is hidden for those who wish to have a crack at it first to figure it out for themselves.


You need to use the first 4 traps to guide the shadow-man to the exit, otherwise you cannot get to the passage top-right without killing the shadow-man and failing.

The screenshot shows the order you need to activate the traps however not one after the other, you do need to guide your other half across his path so pay close attention before trying to set off the next trap.

Do not follow the arrow path until the shadow-man is in the same spot as the screenshot.

Nulan is the hidden character you unlock after finding the secret passage. A new level has unlocked on the map so click on it to unlock her.

She can burn bushes (and also those shooting plants!). The only thing that can kill her is spikes, she will not set off any other traps, not even the holes.

All you need to do in her level is walk straight down, the level pretty much lets you know what she can and cannot do, nice little tutorial for her.


After that she will appear on the main-map (does not appear in bonus levels except Bonus D)

To find bonus level D, you need to complete level 18 with Nulan (other levels does not matter). This is tricky because you cannot use the traps to guide your other half, instead you can use your magic to lead the statue on it's own and away from your shadow-man.

Best way I found to do this was to move the statue into the top right corner and then going to burn the top-left plant first before making my way to the plant on the right-side to burn it.

Go to the right first to not bump into the statue on the shadow-side. Then make your way to the top-left plant.

The shadow-side should then be near the bottom right of his map, to where you use the statue-base nearby to go to the plant on the right of Nulan's maps.


You can how safely get Nulan out so your shadow-man can walk freely to the exit himself

This will also unlock the "Alternative Ending" achievement. After that you will get a message of a new bonus level unlocking, this will be bonus level D and to be honest was not hard to solve thanks to Nulan able to burn the plants. Have fun solving bonus D, this is as far as the help goes.

Just to say a special thank you to the developer for a wonderful puzzle game. It may be short depending on how well you can solve puzzles but I had a blast and trying to solve the hidden passage and alternative ending was a joy to figure out.

I hope you make more in the future as I do enjoy these type of puzzles, something I don't get to see often. Keep up the amazing work :)