| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.45/5 | 4.25/5 |
| Vol 2 | 2.29/5 | 4.27/5 |
| Vol 3 | 1.81/5 | 3.33/5 |
| Vol 4 | 1.93/5 | 4.03/5 |
| Vol 5 | 1.98/5 | 3.14/5 |
| Vol 6 | 1.91/5 | 3.57/5 |
| Vol 7 | 1.88/5 | 4.00/5 |
| Vol 8 | 1.83/5 | 3.54/5 |
| Vol 9 | 1.83/5 | 3.00/5 |
| Vol 10 | 2.06/5 | 4.03/5 |
| Vol 11 | 2.23/5 | 3.20/5 |
| Vol 12 | 1.74/5 | 3.13/5 |
| Vol 13 | 2.10/5 | 4.36/5 |
| Vol 14 | 1.85/5 | 3.90/5 |
| Vol 15 | 1.90/5 | 3.62/5 |
| Vol 16 | 1.84/5 | 3.67/5 |
| Vol 17 | 1.95/5 | 3.43/5 |
| Vol 18 | 1.93/5 | 3.83/5 |
| Vol 19 | 2.20/5 | 2.93/5 |
| Overall | 1.98/5 | 4.36/5 |