Hey Nate! Just a quick little suggestion, could you possibly:

Put a timer on our achievements so we know when they are going to expire as opposed to just seeing expires in >1 day and etc. as it is very vague and I can never tell just when they are going to expire and usually end up going a few fights w/o achievs and/or getting a few challenges w/o achievs (also, as I rarely log out of the game, I usually leave it running in an off-tab, I rarely get the login notification that they've expired unless I refresh my page / have to relog).

Or, alternatively, the option to purchase another week's worth of achievs before (around the >1 day mark) they actually expire.

Perhaps even an auto-purchaser for achievements (1 for gold achievs, 1 for trophy achievs, or 1 for each achiev slot perhaps) which would automatically purchase them upon their expiration?

Just some thoughts on what I feel would make PoW more interactive with the player and more user-friendly, thanks for listening!