| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.26/5 | 4.19/5 |
| Vol 2 | 2.59/5 | 4.40/5 |
| Vol 3 | 2.66/5 | 4.33/5 |
| Vol 4 | 2.71/5 | 4.36/5 |
| Vol 5 | 3.21/5 | 4.50/5 |
| Vol 6 | 3.78/5 | 4.58/5 |
| Vol 7 | 2.82/5 | 4.30/5 |
| Vol 8 | 2.44/5 | 4.30/5 |
| Vol 9 | 2.71/5 | 4.30/5 |
| Vol 10 | 2.76/5 | 4.40/5 |
| Vol 11 | 2.81/5 | 4.46/5 |
| Vol 12 | 2.82/5 | 4.38/5 |
| Vol 13 | 2.90/5 | 4.41/5 |
| Vol 14 | 2.87/5 | 4.41/5 |
| Vol 15 | 2.99/5 | 4.51/5 |
| Vol 16 | 3.16/5 | 4.51/5 |
| Vol 17 | 2.89/5 | 4.47/5 |
| Overall | 2.85/5 | 4.58/5 |