Letter Quest: Grimm's Journey Remastered

All of these achievements can only be unlocked in Endless mode. In this mode, none of your upgrades, weapons, or books carry over from Story mode, so feel free to get these achievements out of the way whenever you like.

In Endless mode, you'll fight monster after monster, and after every 2-3 monsters you'll come to a treasure chest and a merchant. In Endless mode, monsters drop coins instead of gems. These coins are used to purchase items from the merchant. The merchant sells attack upgrade, defense upgrade, health potions, three potions that have the same effects as the blue, red, and purple crystal tiles but for one turn, and bacon, which increases your health by 15%. Each time you purchase any of these items though, the price goes up for the next time. That being said, the coins you collect during a playthrough of Endless mode don't carry over or save, so don't hold back. Spend those coins on whatever you can afford to keep yourself alive.

Also while playing Endless mode, make sure to take advantage of the crystal tiles (refer to the "Walk of Fame" achievement for a list of their effects) whenever they appear. Monsters will increase in difficulty the more you defeat, so make sure to buy attack and defense upgrades as often as possible.

Even without a Scrabble solver, the crystal tiles plus the coins from monsters should be more than enough to keep you alive long enough to defeat 10 monsters in a single game and spell more than 60 words along the way. My best game was 26 monsters in one game with 126 words spelled, and that was after purposely killing myself because I had to go to work. So don't fret about those two achievements.

The rest of the achievements are cumulative, and you'll likely unlock them while playing 10 sessions of Endless mode for this achievement. The last of these achievements to unlock for me was spelling 750 words in Endless mode. If this is the case for you, continually start of games and just spam 3-letter words until you die, and then repeat over and over until you reach 750 words. It's a good idea to do this before grinding words towards the 2500 for "Born To Spell" since the 750 words you need in Endless mode count toward the 2500 you need for "Born To Spell."