Here is the full list of all 77 The Last Error achievements.
Complete Level 1 of Castle 1!
Complete Level 2 of Castle 1!
Complete Level 3 of Castle 1!
Complete Level 4 of Castle 1!
Complete Level 5 of Castle 1!
Complete Level 6 of Castle 1!
Complete Level 7 of Castle 1!
Complete Level 8 of Castle 1!
Complete Level 9 of Castle 1!
Complete Level 10 of Castle 1!
Complete Boss of Castle 1!
Complete Level 1 of Castle 2!
Complete Level 2 of Castle 2!
Complete Level 3 of Castle 2!
Complete Level 4 of Castle 2!
Complete Level 5 of Castle 2!
Complete Level 6 of Castle 2!
Complete Level 7 of Castle 2!
Complete Level 8 of Castle 2!
Complete Level 9 of Castle 2!
Complete Level 10 of Castle 2!
Complete Boss of Castle 2!
Complete Level 1 of Castle 3!
Complete Level 2 of Castle 3!
Complete Level 3 of Castle 3!
Complete Level 4 of Castle 3!
Complete Level 5 of Castle 3!
Complete Level 6 of Castle 3!
Complete Level 7 of Castle 3!
Complete Level 8 of Castle 3!
Complete Level 9 of Castle 3!
Complete Level 10 of Castle 3!
Complete Boss of Castle 3!
Complete Level 1 of Castle 4!
Complete Level 2 of Castle 4!
Complete Level 3 of Castle 4!
Complete Level 4 of Castle 4!
Complete Level 5 of Castle 4!
Complete Level 6 of Castle 4!
Complete Level 7 of Castle 4!
Complete Level 8 of Castle 4!
Complete Level 9 of Castle 4!
Complete Level 10 of Castle 4!
Complete Boss of Castle 4!
Complete Level 1 of Castle 5!
Complete Level 2 of Castle 5!
Complete Level 3 of Castle 5!
Complete Level 4 of Castle 5!
Complete Level 5 of Castle 5!
Complete Level 6 of Castle 5!
Complete Level 7 of Castle 5!
Complete Level 8 of Castle 5!
Complete Level 9 of Castle 5!
Complete Level 10 of Castle 5!
Complete Boss of Castle 5!
Complete Level 1 of Castle 6!
Complete Level 2 of Castle 6!
Complete Level 3 of Castle 6!
Complete Level 4 of Castle 6!
Complete Level 5 of Castle 6!
Complete Level 6 of Castle 6!
Complete Level 7 of Castle 6!
Complete Level 8 of Castle 6!
Complete Level 9 of Castle 6!
Complete Level 10 of Castle 6!
Complete Boss of Castle 6!
Complete Level 1 of Castle 7!
Complete Level 2 of Castle 7!
Complete Level 3 of Castle 7!
Complete Level 4 of Castle 7!
Complete Level 5 of Castle 7!
Complete Level 6 of Castle 7!
Complete Level 7 of Castle 7!
Complete Level 8 of Castle 7!
Complete Level 9 of Castle 7!
Complete Level 10 of Castle 7!
Complete Boss of Castle 7!