| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.73/5 | 3.72/5 |
| Vol 2 | 3.01/5 | 3.98/5 |
| Vol 3 | 3.20/5 | 4.09/5 |
| Vol 4 | 3.18/5 | 4.28/5 |
| Vol 5 | 3.02/5 | 3.99/5 |
| Vol 6 | 2.60/5 | 3.59/5 |
| Vol 7 | 3.16/5 | 3.88/5 |
| Vol 8 | 3.24/5 | 4.06/5 |
| Vol 9 | 2.56/5 | 3.87/5 |
| Vol 10 | 2.97/5 | 4.11/5 |
| Vol 11 | 2.73/5 | 3.88/5 |
| Vol 12 | 3.21/5 | 4.13/5 |
| Vol 13 | 2.86/5 | 3.76/5 |
| Vol 14 | 2.89/5 | 3.87/5 |
| Vol 15 | 3.19/5 | 4.20/5 |
| Vol 16 | 3.15/5 | 4.20/5 |
| Overall | 2.98/5 | 4.28/5 |