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Difficulty: Medium
Book Learner is an achievement unlockable on the DS version of Plants vs. Zombies. In order to achieve it, the player must fill out the Almanac, requiring them to see all zombies and get all plants.
This achievement is not too hard to get. To get this, all the player has to do is to beat Adventure Mode, buy all of the upgrade plants and the Imitater from Crazy Dave's Twiddydinkies, and also
Book Learner not achieved
encounter the Zombie Yeti by seeing it in Level 4-10 when the player replays Adventure Mode. It's just like a combination of the achievements "Morticulturalist" and "Zombologist" or "Cryptozombologist" from the other versions. This achievement will not count until the player finds the Zombie Yeti.
Note: The player might need to do some gold farming to buy upgrades and the Imitater.