| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 1.88/5 | 2.89/5 |
| Vol 2 | 2.41/5 | 4.15/5 |
| Vol 3 | 2.41/5 | 4.23/5 |
| Vol 4 | 2.44/5 | 4.23/5 |
| Vol 5 | 2.20/5 | 4.19/5 |
| Vol 6 | 2.14/5 | 4.14/5 |
| Vol 7 | 2.36/5 | 4.25/5 |
| Vol 8 | 2.65/5 | 4.42/5 |
| Vol 9 | 2.60/5 | 4.27/5 |
| Vol 10 | 2.79/5 | 4.39/5 |
| Vol 11 | 2.50/5 | 4.33/5 |
| Vol 12 | 2.67/5 | 4.41/5 |
| Vol 13 | 2.80/5 | 4.47/5 |
| Vol 14 | 2.66/5 | 4.43/5 |
| Vol 15 | 2.97/5 | 4.54/5 |
| Overall | 2.50/5 | 4.54/5 |