I know a lot of other players are having issues with this achievement being buggy where it doesn't pop up right away unless you retry over & over? Does this achievement pop up for you first try after successfully completing it? This is a post after the February 16th update.

The Valhalla Update/patch fixes from February 16th: For anyone who wants to complete the Fishing Hut tasks, as far as I have experienced & I could be wrong & not be looking in the correct fishing locations, but the large Flatfish & the large Mackerel are still bugged.I don't have the patience to keep looking or find "fixes" involving re-loading saves & stuff. I'm just posting this to hopefully save a lot of people time & frustration ://. I have made a case with Ubisoft about this bug still not being fixed & I recommend that more people report this bug too, so that it can be addressed again & hopefully actually be fixed by the next update/patch fixes.

People have noted that the treasure does not spawn in the treasure hoard location. For an example, the Treasure Hoard map found in Eurvicscire does not spawn the treasure in the treasure hoard location. Anybody else have this issue? If so, can people somehow get Ubisoft to fix this bug?