Hellooo :D
UPDATE:
So I've uploaded a new version of Antumbra with the promised "Medal-Checker" button and also added a "Reset Save" button at the Warning screen.
Medal-Checker can be found inside Medals screen, on the left. Just click it and it should run a check on your medals and reward you with the missing ones.
"Reset Save" is there if you save got bugged, corrupted or something. It will just reset your progress in game. Of course, without taking medals off you :)
Remember to CLEAR your web browser cach if you played Antumbra before!
I've also tried to solve the problem with game freezing and I got it fixed. If you run into something bad - please send me a PM.

WALKTHROUGH:
I did the scary thing and recorded an official Antumbra Walkthrough. You can watch it here:
https://youtu.be/1rJPeoByy_Y
Inside the video you will learn all the solution to any riddles, needed to complete the game. Plus, you will hear a lot of my broken English and see my ugly face. Yay! :D

SPECIAL THANKS:
Goes to Tom Fulp. A day ago, he pretty much saved Antumbra and my future. Kudos Tom. Once I'll earn that 2 mil dollars I am sending half of the loot to you. No seriously guys, I owe him. Big time. Spam him with love and your naked pics (If you happened to be a woman that is).
You. Yes, you. You who are reading this. Because you made this. You enabled this to happened. And without you my dear comrade - I would be nowhere. And I owe you too.