Every time I climb to the top of the ladder for the tower with the eagle's nest in the port in the first mission, as the player is climbing onto the platform, the player falls, there's a Windows error sound, the character insta-dies while falling about 1/4 of the way down the ladder. Is this a known bug? I didn't see it mentioned elsewhere.

The same occurs on my game, I guess it is either a bug or it could just be that the devs never intended the players to cilmb the tower, wich would be weird, so I would rather guess it's the former.
This game has various glitches, and sadly I don't think any patch exist to fix any of those issues...