Portal 2 Puzzle giveaway for Capsized (ENDED)

I made some integrations to my very first Portal 2 chamber (I am new to it).

As the title says, if you want to participate in a private GA, you have to solve it.

• code parts are hidden in some of the rooms (characters of A-Z/0-9, #huge tip: 2 letters, one number)
• if you manage to finish the chamber, perhaps you will know the full code (if you listened)
• if you want to enter the giveaway, just invite me as friend on steam, and tell me the code
• after I speak with the first solver, I'll make a giveaway on Steamgifts for Capsized.
• the giveaway will last for a week

Rules:

1. Please dont tell anyone the code/GA URL (and don't tell puzzle tips).
2. (Optional) Please share your thoughts/experiences about this chamber. (Rate doesn't hurt also :P) Thanks.
3. Don't cheat :3

So the chamber: Kick a droid X

• you have to subscribe to download it

Good luck & have fun everyone. :)

Updates:

1 We have our first solver!

Congrats for Leser!

The giveaway is now started and lasts for a week from now, ends on 11.06.

2 Another solvers and confused players

Another 3 successful players in 11 hours from start, thank you guys and hope you had fun playing it.

Tip updates:

• 2 letters(possible english letters A-Z), one number*
• since it's always difficult for you guys to find out what is the first letter: now I tell you, it's not C. :)
• Don't get crazy looking letters everywhere, but all I can tell you now is none of the code parts are in the big starting room.

3 Giveaway ended

Unfortunately only 4 solvers who participated in giveaway.
(I suppose it was too hard without any antlines :P)
Please tell me your experiences if you have time to help me make better chambers in the future.
Thanks everyone for trying/solving it, and congratulations to our winner: harter.