| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.21/5 | 4.38/5 |
| Vol 2 | 1.90/5 | 4.30/5 |
| Vol 3 | 2.27/5 | 4.43/5 |
| Vol 4 | 2.24/5 | 4.45/5 |
| Vol 5 | 2.32/5 | 4.46/5 |
| Vol 6 | 2.00/5 | 4.38/5 |
| Vol 7 | 2.55/5 | 4.45/5 |
| Vol 8 | 2.70/5 | 4.48/5 |
| Vol 9 | 2.46/5 | 4.47/5 |
| Vol 10 | 2.52/5 | 4.44/5 |
| Vol 11 | 1.92/5 | 4.33/5 |
| Vol 12 | 2.16/5 | 4.40/5 |
| Vol 13 | 2.18/5 | 4.30/5 |
| Vol 14 | 2.69/5 | 4.50/5 |
| Vol 15 | 2.09/5 | 4.29/5 |
| Vol 16 | 2.09/5 | 4.27/5 |
| Vol 17 | 2.24/5 | 4.39/5 |
| Vol 18 | 2.00/5 | 4.36/5 |
| Vol 19 | 1.79/5 | 4.23/5 |
| Vol 20 | 2.38/5 | 4.46/5 |
| Vol 21 | 2.53/5 | 4.50/5 |
| Overall | 2.27/5 | 4.50/5 |