| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.47/5 | 2.88/5 |
| Vol 2 | 2.49/5 | 2.99/5 |
| Vol 3 | 2.47/5 | 2.94/5 |
| Vol 4 | 2.47/5 | 2.90/5 |
| Vol 5 | 2.49/5 | 3.01/5 |
| Vol 6 | 2.48/5 | 2.88/5 |
| Vol 7 | 2.44/5 | 2.91/5 |
| Vol 8 | 2.50/5 | 3.33/5 |
| Vol 9 | 2.52/5 | 3.03/5 |
| Vol 10 | 2.49/5 | 2.96/5 |
| Vol 11 | 2.45/5 | 2.89/5 |
| Vol 12 | 2.41/5 | 2.93/5 |
| Vol 13 | 2.40/5 | 2.90/5 |
| Vol 14 | 2.44/5 | 2.99/5 |
| Vol 15 | 2.49/5 | 3.31/5 |
| Vol 16 | 2.51/5 | 3.12/5 |
| Vol 17 | 2.49/5 | 3.07/5 |
| Overall | 2.47/5 | 3.33/5 |