It took me about 2 hours but I eventually did it! Given you're starting facing north it's the north eastern one that you might miss, I think the platform is too far to see from any other one, I had to map the game then just restart a few times rushing into one direction to try to figure out where it could be.
At first some pieces seem almost impossible to take and even when you got it you don't get how, that's really confusing until your realise that when trying to walk across a piece won't work then just turning 360° near it will work, then it flows.
Building bridges is cool, and so is the combat system (and I think it could still work great in a bigger game too), I really wish there was a way to walk faster though'.
In the end I had fun with the challenge of finally finding all the pieces, thanks for sharing the game.