MarathonG 10

This can be unlocked using system clock changes. Meaning, set your clock to the first of a month, open Taptiles, complete 1 daily challenge (or more if you want to go for a medal at the same time, but I recommend pursuing this one separately and going back later for medals if you want), and close the app. Change to the 2nd of the month, etc. etc. Make sure to close the program out before changing the time and firing up the program again. I'm not sure if this is actually required, but I would hate for anyone to get to the last day of achievements and have it not pop. Better safe than sorry.

Note that this achievement does not have a perfectly accurate description. I attempted to use a February for obvious reasons, and the achievement did not unlock. I also had to play a challenge on the 1st, 2nd, and 3rd of March before this achievement unlocked. There is some disagreement across different sites and forums as to the exact requirements. Some claimed to have unlocked it after 30 days, some (like me) ended up with 31. There are also some who claim the exact days don't matter, and any consecutive 30/31 days will work, even if it's from the middle of one month to the next. I can't vouch for this exact piece of information, so my recommendation is to just pick the first day of a 31 day month (January, March, May, July, August, October, December) and do each day of the month using the method above. Either it pops on day 30 and you can stop, or you have to go one more day to hit 31. This way, it was 31 days, all in one month. No question about whether or not requirements were met.