| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.04/5 | 4.35/5 |
| Vol 2 | 2.23/5 | 3.20/5 |
| Vol 3 | 1.89/5 | 4.01/5 |
| Vol 4 | 2.24/5 | 4.40/5 |
| Vol 5 | 2.12/5 | 4.40/5 |
| Vol 6 | 1.89/5 | 3.26/5 |
| Vol 7 | 1.79/5 | 2.97/5 |
| Vol 8 | 1.86/5 | 3.26/5 |
| Vol 9 | 1.82/5 | 3.06/5 |
| Vol 10 | 1.60/5 | 2.73/5 |
| Vol 11 | 1.72/5 | 3.93/5 |
| Vol 12 | 1.66/5 | 2.89/5 |
| Overall | 1.91/5 | 4.40/5 |