| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.29/5 | 4.19/5 |
| Vol 2 | 2.03/5 | 4.00/5 |
| Vol 3 | 2.24/5 | 4.14/5 |
| Vol 4 | 2.00/5 | 4.19/5 |
| Vol 5 | 2.11/5 | 3.69/5 |
| Vol 6 | 2.34/5 | 4.25/5 |
| Vol 7 | 2.77/5 | 4.43/5 |
| Vol 8 | 2.54/5 | 4.19/5 |
| Vol 9 | 2.44/5 | 4.17/5 |
| Vol 10 | 2.59/5 | 4.35/5 |
| Vol 11 | 2.84/5 | 4.32/5 |
| Vol 12 | 2.67/5 | 4.39/5 |
| Vol 13 | 2.34/5 | 4.30/5 |
| Vol 14 | 2.39/5 | 4.33/5 |
| Vol 15 | 2.03/5 | 3.59/5 |
| Vol 16 | 1.95/5 | 3.91/5 |
| Vol 17 | 2.45/5 | 4.14/5 |
| Vol 18 | 2.40/5 | 4.25/5 |
| Overall | 2.36/5 | 4.43/5 |