I have compiled this easy guide on how to complete the follow three questsThe Haunting Stones Quest There are 2 stone spawn locations in each of the areas apart from Werebear Grove that I found in my time spent in the relevant areas.
The Sap Samples Quest I have discovered 3 closely linked trees that have a fairly decent respawn rate that you can repeat over and over again till you have eventually received all 6. There will be times that you do all 3 a few times and receive nothing, but this is due to low
drop rate. Just keep doing them, you will get them eventually.
Mastering Darkwater's Beasts Quest After a many miles of running from one side of Darkwater to the other and back and repeating that process a half dozen times, I can now compile this guide. On the imagine you will find the locations where they spawn. They tend to have a low re-spawn rate, so you may need to comeback a few times. Some interesting facts about the quest are that you do NOT need to kill 5 different ones. If you run into one you have already killed, you can kill it again for a trophy assuming it can drop one.
I have discovered 9 elites that are associated with the trophies quest. There may be a few more that I haven't found thou. Most interesting find is that only some of those 9 seem to drop the trophy 100%. Below 5 are ones that I have received confirmation about.
9. Huven - Vicious Werebear6. Mudsnout - Marsh Bat4. Mudhoof - Boar
3. Greygrowl - Savage Wolf2. Mirefang - Swamp Bat1. Kekara (80% sure of spelling...) - Sea Crab
My friend and myself have only gotten trophies from these 6. We have killed the others at least once and some more than once without a drop. This could be bad luck or low drop-rate, but I believe that the ones I recommend have a 100% drop rate. If you try and get drops from others, let me know and I'll update this info.