| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.67/5 | 4.33/5 |
| Vol 2 | 2.74/5 | 4.01/5 |
| Vol 3 | 2.77/5 | 4.12/5 |
| Vol 4 | 2.77/5 | 4.10/5 |
| Vol 5 | 3.01/5 | 4.33/5 |
| Vol 6 | 2.98/5 | 4.36/5 |
| Vol 7 | 3.19/5 | 4.41/5 |
| Vol 8 | 2.61/5 | 4.12/5 |
| Vol 9 | 2.80/5 | 4.28/5 |
| Vol 10 | 2.75/5 | 4.25/5 |
| Vol 11 | 2.77/5 | 4.23/5 |
| Vol 12 | 2.69/5 | 4.21/5 |
| Vol 13 | 3.36/5 | 4.39/5 |
| Vol 14 | 2.89/5 | 4.21/5 |
| Vol 15 | 2.82/5 | 4.12/5 |
| Vol 16 | 2.91/5 | 4.31/5 |
| Vol 17 | 2.87/5 | 4.25/5 |
| Vol 18 | 2.89/5 | 4.25/5 |
| Vol 19 | 2.93/5 | 4.37/5 |
| Vol 20 | 3.24/5 | 4.37/5 |
| Overall | 2.88/5 | 4.41/5 |