Guild Wars 2

Rewards for completing every act of this achievements is amulet,for first 3 acts it is amulets with same stats i understand they are unique but…
4th one is kinda ok coz you can select stats..
In future can we have unique rewards when i say unique i dont mean same thing with different name on it!
Killed my desire to complete this achievements!

They have different slots in it, offensive/defensive/utility and as you mentioned, the last one is a great amulet that you can select the stats (Viper included), so it seems ok imo.

That is how the story rewards works, the 1st part of the LS2 gave Nomad’s trinkets, the 2nd part Sinister, the next LS will probably give another stat.