| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.62/5 | 4.42/5 |
| Vol 2 | 2.71/5 | 4.26/5 |
| Vol 3 | 2.77/5 | 4.38/5 |
| Vol 4 | 2.59/5 | 4.26/5 |
| Vol 5 | 2.87/5 | 4.55/5 |
| Vol 6 | 2.74/5 | 4.29/5 |
| Vol 7 | 2.86/5 | 4.42/5 |
| Vol 8 | 2.85/5 | 4.44/5 |
| Vol 9 | 2.84/5 | 4.38/5 |
| Vol 10 | 2.90/5 | 4.52/5 |
| Vol 11 | 2.52/5 | 3.95/5 |
| Overall | 2.76/5 | 4.55/5 |