| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.66/5 | 4.10/5 |
| Vol 2 | 2.57/5 | 4.35/5 |
| Vol 3 | 2.97/5 | 4.04/5 |
| Vol 4 | 2.93/5 | 4.31/5 |
| Vol 5 | 2.71/5 | 4.20/5 |
| Vol 6 | 2.59/5 | 3.78/5 |
| Vol 7 | 2.89/5 | 4.26/5 |
| Vol 8 | 2.85/5 | 4.35/5 |
| Vol 9 | 3.38/5 | 4.31/5 |
| Vol 10 | 2.96/5 | 4.23/5 |
| Vol 11 | 3.12/5 | 4.37/5 |
| Vol 12 | 3.24/5 | 4.33/5 |
| Vol 13 | 3.14/5 | 4.23/5 |
| Vol 14 | 3.04/5 | 4.33/5 |
| Overall | 2.93/5 | 4.37/5 |