Just a small correction there, 90k zing are going to vials at the moment, this changed when we added the 2 new achievements: referrals and contributor. Now it's 90k zing to vials and 10k zing to achievements with their own weights.
We've yet to announce the cakeday achievement as we're planning on revealing a new creature with the announcement as well, but as you can imagine the cakeday and advent calendar achievement don't earn as much zing as the other 2 since they're quite "easy" to earn.
I will fix this