| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.19/5 | 3.20/5 |
| Vol 2 | 2.72/5 | 4.46/5 |
| Vol 3 | 2.72/5 | 4.54/5 |
| Vol 4 | 2.75/5 | 4.54/5 |
| Vol 5 | 2.51/5 | 4.50/5 |
| Vol 6 | 2.45/5 | 4.45/5 |
| Vol 7 | 2.67/5 | 4.56/5 |
| Vol 8 | 2.96/5 | 4.73/5 |
| Vol 9 | 2.91/5 | 4.58/5 |
| Vol 10 | 3.10/5 | 4.70/5 |
| Vol 11 | 2.81/5 | 4.64/5 |
| Vol 12 | 2.98/5 | 4.72/5 |
| Vol 13 | 3.11/5 | 4.78/5 |
| Vol 14 | 2.97/5 | 4.74/5 |
| Vol 15 | 3.28/5 | 4.85/5 |
| Overall | 2.81/5 | 4.85/5 |