| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.51/5 | 4.40/5 |
| Vol 2 | 2.95/5 | 4.53/5 |
| Vol 3 | 2.99/5 | 4.49/5 |
| Vol 4 | 2.80/5 | 4.42/5 |
| Vol 5 | 2.96/5 | 4.43/5 |
| Vol 6 | 3.35/5 | 4.64/5 |
| Vol 7 | 3.81/5 | 4.69/5 |
| Vol 8 | 3.11/5 | 4.59/5 |
| Vol 9 | 3.84/5 | 4.69/5 |
| Vol 10 | 3.07/5 | 4.55/5 |
| Vol 11 | 3.13/5 | 4.60/5 |
| Vol 12 | 2.95/5 | 4.53/5 |
| Vol 13 | 3.27/5 | 4.59/5 |
| Vol 14 | 2.93/5 | 4.53/5 |
| Vol 15 | 3.13/5 | 4.61/5 |
| Vol 16 | 3.71/5 | 4.68/5 |
| Vol 17 | 3.00/5 | 4.58/5 |
| Vol 18 | 3.75/5 | 4.67/5 |
| Vol 19 | 3.03/5 | 4.55/5 |
| Vol 20 | 3.02/5 | 4.56/5 |
| Vol 21 | 3.40/5 | 4.62/5 |
| Vol 22 | 3.45/5 | 4.61/5 |
| Vol 23 | 2.92/5 | 4.45/5 |
| Overall | 3.16/5 | 4.69/5 |