Update 5:
For the last weeks, we have been fixing the game in a team of just three people, working around the clock, during our spare time. We wanted to do everything we could to polish the game further. You provided us with unparalleled support from the beginning, and we would like to thank you deeply from our hearts.

We’ve managed to deliver a number of fixes. Hopefully, they are going to make a difference for you - check them out!
Area after the boss fight, where player has to cross the river, should now always load properly
Falling rocks will no longer push player off a cliff
In the diner, player will no longer be pushed into a corner by an opening door
Various textures improvements
Various sound improvements
Added FoV slider to game options (range 90 - 120)