Easy 100%
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1.start new game
2.always choose the first answer
3.after you get the first achievement go back to the main menu
4.start a new game
5.always choose the second answer
6.Now you have the game at 100%
7.VOTE UP THIS GUIDE <3

tipp: use an autoclicker if you are not interested in the story if you are enjoy it ^^

Now you have 2 new sweet achievements