Since others have already posted about the bugs and issues with the Yargle Day achievements, I'm just going to thank the devs for the fun challenge (and it was quite challenging). I'm also betting I'm one of very few (if there are any other) people who got the 9/3 achievement by doing exactly 93 damage with Yargle. To achieve that, I have to thank one opponent that turned my Yargle into a 1/1 and took 3 hits from it.