| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.45/5 | 4.47/5 |
| Vol 2 | 3.99/5 | 4.57/5 |
| Vol 3 | 3.90/5 | 4.54/5 |
| Vol 4 | 4.07/5 | 4.60/5 |
| Vol 5 | 4.00/5 | 4.57/5 |
| Vol 6 | 4.07/5 | 4.60/5 |
| Vol 7 | 4.09/5 | 4.61/5 |
| Vol 8 | 4.04/5 | 4.58/5 |
| Vol 9 | 3.78/5 | 4.54/5 |
| Vol 10 | 3.80/5 | 4.53/5 |
| Vol 11 | 3.24/5 | 4.47/5 |
| Vol 12 | 3.95/5 | 4.55/5 |
| Overall | 3.85/5 | 4.61/5 |