| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.72/5 | 4.55/5 |
| Vol 2 | 3.60/5 | 4.55/5 |
| Vol 3 | 3.89/5 | 4.59/5 |
| Vol 4 | 3.95/5 | 4.60/5 |
| Vol 5 | 3.57/5 | 4.50/5 |
| Vol 6 | 3.59/5 | 4.52/5 |
| Vol 7 | 3.76/5 | 4.56/5 |
| Vol 8 | 3.66/5 | 4.56/5 |
| Vol 9 | 3.57/5 | 4.51/5 |
| Vol 10 | 4.04/5 | 4.61/5 |
| Vol 11 | 3.52/5 | 4.53/5 |
| Vol 12 | 3.36/5 | 4.53/5 |
| Overall | 3.69/5 | 4.61/5 |