| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.84/5 | 3.80/5 |
| Vol 2 | 2.77/5 | 3.71/5 |
| Vol 3 | 2.95/5 | 3.84/5 |
| Vol 4 | 2.74/5 | 3.57/5 |
| Vol 5 | 2.87/5 | 3.64/5 |
| Vol 6 | 2.80/5 | 3.71/5 |
| Vol 7 | 3.07/5 | 3.80/5 |
| Vol 8 | 2.62/5 | 3.45/5 |
| Vol 9 | 3.00/5 | 3.64/5 |
| Vol 10 | 2.84/5 | 3.56/5 |
| Vol 11 | 3.02/5 | 3.93/5 |
| Vol 12 | 3.01/5 | 3.77/5 |
| Vol 13 | 2.99/5 | 3.82/5 |
| Overall | 2.89/5 | 3.93/5 |