Post all hidden or none hidden achievements here !!

I need help finding all of them, thats kinda my goal here, i know theres hidden ones, but i'm not sure what they are or how to get them, if any of y'all mind helping i would really appreciate it !!

- Castle Victory: Play O-O# or O-O-O# in any game

- Full House: Win a game without losing a single piece

- Killer King: Checkmate an opponent with a discovered attack from a king move

- Nick of Time: Win a game with <0:01 remaining on your clock

- Full Day: Spend 24 hours doing puzzles

- Searching for Bobby Fischer: Click this link

- There are five separate badges for beating the Christmas bots (possibly unobtainable)

- Juggler: Have 20 or more active Daily games at one time

- Marathon: Complete a game that lasted more than 100 moves

- Good Read: Get 100 views on a blog

- Good Habit: Do puzzles every day for a week

- First: Comment on a daily puzzle

- Man vs. Machine: Play against a bot in Live Chess (UNOBTAINABLE)

- Pen Pal: Have friends from ten different countries

Thanks !!

https://www.chess.com/blog/Nightwish85/achievements-guide

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