| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.13/5 | 4.16/5 |
| Vol 2 | 1.90/5 | 4.28/5 |
| Vol 3 | 2.14/5 | 4.30/5 |
| Vol 4 | 2.11/5 | 4.57/5 |
| Vol 5 | 2.19/5 | 4.56/5 |
| Vol 6 | 2.07/5 | 4.44/5 |
| Vol 7 | 1.83/5 | 3.22/5 |
| Vol 8 | 2.24/5 | 4.55/5 |
| Vol 9 | 2.17/5 | 4.49/5 |
| Vol 10 | 2.22/5 | 4.28/5 |
| Vol 11 | 1.99/5 | 4.04/5 |
| Vol 12 | 2.18/5 | 4.31/5 |
| Vol 13 | 2.08/5 | 4.44/5 |
| Vol 14 | 2.25/5 | 4.37/5 |
| Vol 15 | 2.75/5 | 4.68/5 |
| Overall | 2.15/5 | 4.68/5 |