Hi-tech | Low-tech | |
Lesson 1 | Medium | Hard |
Lesson 2 | Easy | Medium |
Lesson 3 | Easy | Medium |
Lesson 4 | Easy | Medium |
Lesson 5 | Easy | Medium |
Lesson 6 | Medium | Hard |
Lesson 7 | Medium | Medium |
Lesson 8 | Easy | Medium |
Lesson 9 | Easy | Medium |
Lesson 10 | Easy | Easy |
Lesson 11 | Easy | Medium |
Lesson 12 | Medium | Medium |
Lesson 13 | Medium | Hard |
Lesson 14 | Easy | Medium |
Lesson 15 | Easy | Medium |
Lesson 16 | Easy | Medium |
Lesson 17 | Medium | Medium |
Lesson 18 | Medium | Medium |
Lesson 19 | Easy | Medium |
Lesson 20 | Hard | Hard |