| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 1.51/5 | 2.72/5 |
| Vol 2 | 1.46/5 | 2.14/5 |
| Vol 3 | 1.44/5 | 2.16/5 |
| Vol 4 | 1.36/5 | 1.71/5 |
| Vol 5 | 1.46/5 | 2.22/5 |
| Vol 6 | 1.37/5 | 1.72/5 |
| Vol 7 | 1.39/5 | 1.75/5 |
| Vol 8 | 1.54/5 | 2.48/5 |
| Vol 9 | 1.57/5 | 2.62/5 |
| Vol 10 | 1.52/5 | 2.46/5 |
| Vol 11 | 1.44/5 | 1.90/5 |
| Vol 12 | 1.42/5 | 1.86/5 |
| Vol 13 | 1.48/5 | 2.34/5 |
| Vol 14 | 1.52/5 | 2.67/5 |
| Vol 15 | 1.37/5 | 1.76/5 |
| Vol 16 | 1.42/5 | 1.83/5 |
| Vol 17 | 1.46/5 | 2.10/5 |
| Vol 18 | 1.56/5 | 2.56/5 |
| Vol 19 | 1.75/5 | 3.13/5 |
| Vol 20 | 2.04/5 | 3.32/5 |
| Vol 21 | 1.56/5 | 2.80/5 |
| Vol 22 | 1.67/5 | 3.13/5 |
| Overall | 1.51/5 | 3.32/5 |