Chicken
Launching the game for the first time

As described.


You are
Launching the game for the first time

As described.


So
Launching the game for the first time

As described.


Beautiful
Launching the game for the first time

As described.


End of the Beginning
Arriving at the exit for the first time

You need to successfully get to the end and take the stairs up the light.


Hidden ending
Enter the correct four-digit password

When standing in front of the exit stairs there is a letter on ground. Solve it for a 4-digit code. Enter this code at the door on the other side. (The code is 4425)

What are you doing
Curiosity Killed The Chicken

When you entered the hidden ending walk all the way to the final room where big mushroom-like plants are. Now jump off of them until your health hits 0%.