After a few tries i have a solution. Follow me:
1.uninstall make it rain, tiny troopers, and what in the world.
2.install what in the world and start the game again.
3.set the game in Italian
4.answer 25 words. Now you unlock tier 2 and the game crashes.
5. Start the game and skip the tutorial. Dont say AUDI but press back and press play, select the Second tier from the first question.
6. You have 10 hints, press the button (basket) and select install make it rain or tiny troopers.
7.wait the Installation and come back to what in the world.
8.answer a word and you'll earn 20 hints.
9.repeat steps number 6.7,8 with the other game.
10. 50 hints now. Do it as soon as you can. And achecement unlocked