| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 1.63/5 | 3.56/5 |
| Vol 2 | 1.04/5 | 4.09/5 |
| Vol 3 | 1.45/5 | 3.00/5 |
| Vol 4 | 1.20/5 | 3.78/5 |
| Vol 5 | 1.49/5 | 3.67/5 |
| Vol 6 | 1.48/5 | 4.35/5 |
| Vol 7 | 1.60/5 | 4.25/5 |
| Vol 8 | 1.39/5 | 2.85/5 |
| Vol 9 | 1.42/5 | 4.00/5 |
| Vol 10 | 1.55/5 | 4.12/5 |
| Vol 11 | 1.16/5 | 2.83/5 |
| Vol 12 | 1.85/5 | 3.86/5 |
| Vol 13 | 1.58/5 | 4.03/5 |
| Vol 14 | 1.77/5 | 4.00/5 |
| Vol 15 | 1.23/5 | 2.56/5 |
| Overall | 1.46/5 | 4.35/5 |