Please relook at the You Got Game achievement
As it stands right now the achievement You Got Game has way too large of a requirement for most players to even have a chance to do. It requires 3000 A rank hunt kills and 2000 S rank hunt kills. The reason why this is out of reach for the majority of players is due to the 2k S ranks. The 3000 A is also obnoxious but at least they spawn frequently and there are a lot of them now. For the S ranks though they still have a multiple day cooldown and there are not many of them. The issue is compounded by the fact that the A Realm Reborn S ranks can be killed by one or at least a small group of max level players and the Heavensward will take less and less players as the expansion goes on which means that it will become harder and harder for players to even have a chance to participate in any specific spawn of an S rank.
My suggestion is to lower the number of kills needed to get this tiger mount or greatly increase the spawn rank of the S ranks. Or give us some way to trigger them more frequently via an item we can buy with tomestones and / or hunt seals. I have been playing since A Realm Reborn and only have 184 S rank kills to my name which is why this feels like a massively large amount of S kills for most players on the more populated servers. It is basically rewarding the cheaters who use an addon to know exactly when a hunt spawns in a zone and who then kill it without letting others even have a chance to participate.
As for the A ranks since their spawn was highly increased the 3000 is within the realm of possibility but still should be lowered as well.