A Really Original Hard Adventure

Alternate instructions by Levi:

The aim of the game is to go through doors in Levels 1-5 until both the boy and girl are able to meet each other in Level 6. 

(Level 6's win condition is when both players touch each other)

BOY CONTROLS:
W - Jump | AD - Left and Right movement | S - Crouch

GIRL CONTROLS:

Up arrow - Jump | Up arrow (x2) - Double jump | Left arrow, Right arrow - Left and Right movement

Boy tips: You can do a 'Crouch jump' by holding S and jumping which will allow you to perform some jumps like jumping onto a ledge since your hitbox becomes small.

Girl tips: Don't spam your jump move too quickly as that will lessen the maximum jump height you can achieve, time them with a very short delay instead.

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Game mechanics:

Teleporter - The structure with animated yellow lines coming from it is the teleporter. To activate the teleporter, have either the boy or girl be standing on it / in front of it and press W (boy) or Up arrow (girl) and the boy and girl will switch places.

Button - Having either the boy or girl stand on the button will activate that button and whatever is activated (e.g a door being opened) will be deactivated upon stepping off the button.

Timed button - Functions exactly the same as a regular button but stays pressed for a certain amount of time. (Only present in Level 4)

Key - Touching a key will activate something permanently.

Fake key - This key will look like a real key but will do nothing. (Only present in Level 6)

Lever - Touching the lever will activate it, causing things to be activated / deactivated similar to the button. However, unlike the button, you don't need to be standing on the lever constantly to keep it active.

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Level FAQs (Hints on difficult parts):

Level 4 | Boy can't jump to 2nd room platform - Have the boy instead jump up to the left-most side of the room to the teleporter up there. The boy can reach those platforms and the girl can access the 2nd room platforms.

Level 5 | Key door 'softlock' - You can escape this by doing a crouch jump with the boy by holding S and jumping up to a ledge which is accessible when the boy is crouching.

Level 6 | Weird key - That key is a fake key and unnecessary in completing the level.

Level 6 | Potential softlock - When the boy teleports, DO NOT fall off the teleporter. The boy cannot get back up. (This is intended to be this way) Although the boy has to leave the first teleporter at some point after certain conditions are met and it's safe for the boy to do so.

(IF YOU WOULD LIKE ADDITIONAL HINTS - Reply)

This was well made, however, there were few instructions and me and my friend were baffled for five minutes on what to do in the final level.

It would have been nice to have the instruction on how the characters play on the screen. Having the characters swap sides was very confusing. Was this intentional?