| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.84/5 | 3.89/5 |
| Vol 2 | 2.86/5 | 4.10/5 |
| Vol 3 | 2.86/5 | 3.91/5 |
| Vol 4 | 2.89/5 | 4.10/5 |
| Vol 5 | 2.79/5 | 3.89/5 |
| Vol 6 | 2.71/5 | 3.75/5 |
| Vol 7 | 2.94/5 | 4.19/5 |
| Vol 8 | 3.00/5 | 4.16/5 |
| Vol 9 | 2.92/5 | 4.22/5 |
| Vol 10 | 2.86/5 | 4.10/5 |
| Vol 11 | 3.08/5 | 4.24/5 |
| Vol 12 | 2.94/5 | 3.94/5 |
| Vol 13 | 2.97/5 | 4.07/5 |
| Vol 14 | 2.92/5 | 3.99/5 |
| Vol 15 | 3.37/5 | 4.39/5 |
| Overall | 2.93/5 | 4.06/5 |