| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.34/5 | 4.27/5 |
| Vol 2 | 2.17/5 | 3.79/5 |
| Vol 3 | 1.90/5 | 3.15/5 |
| Vol 4 | 2.27/5 | 4.41/5 |
| Vol 5 | 2.24/5 | 3.91/5 |
| Vol 6 | 2.52/5 | 4.16/5 |
| Vol 7 | 2.65/5 | 4.27/5 |
| Vol 8 | 2.34/5 | 3.22/5 |
| Vol 9 | 2.62/5 | 4.33/5 |
| Vol 10 | 2.52/5 | 3.94/5 |
| Vol 11 | 2.63/5 | 4.09/5 |
| Vol 12 | 2.41/5 | 4.66/5 |
| Vol 13 | 2.20/5 | 4.62/5 |
| Vol 14 | 4.24/5 | 4.84/5 |
| Overall | 2.55/5 | 4.84/5 |