HOW TO GET AROUND THE BUGGY ACHIEVEMENT.
First of all I just want to say that I've attempted to get this achievement by following other user guides, however this never ever unlocked.
I attempted the following:
- Set-up three lengths of 1000m each and did this several times.
- Avoided going "up" to a walking stance when going through river beds.
- Accumulating 50km+ of horse swimmed distance.
None of the above worked. (please note i attempted all the above on a 95 hour male eivor character)
I then attempted to restart the game, completed the prologue, completed Norway, headed to the settlement spot and then headed to a beer drinking activity in which i then proceeded to generate 150 coins. After this I found the nearest stable, bought the swimming perk and then completed this on my first attempt.
Please note I started this new game as the female Eivor (not sure if this will make a difference, but this is how i achieved it).
Think its also worth noting that the launch day patch was very buggy and that was when i started the game, starting a new game with the latest patch and with female eivor did the trick for me.
Hope this helps.