| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.88/5 | 4.63/5 |
| Vol 2 | 2.80/5 | 4.58/5 |
| Vol 3 | 3.02/5 | 4.62/5 |
| Vol 4 | 2.98/5 | 4.58/5 |
| Vol 5 | 2.85/5 | 4.61/5 |
| Vol 6 | 2.71/5 | 4.55/5 |
| Vol 7 | 2.51/5 | 4.42/5 |
| Vol 8 | 2.52/5 | 4.42/5 |
| Vol 9 | 2.99/5 | 4.71/5 |
| Vol 10 | 2.87/5 | 4.66/5 |
| Vol 11 | 3.19/5 | 4.72/5 |
| Vol 12 | 3.64/5 | 4.76/5 |
| Vol 13 | 4.25/5 | 4.81/5 |
| Vol 14 | 4.08/5 | 4.78/5 |
| Vol 15 | 2.60/5 | 4.64/5 |
| Overall | 3.05/5 | 4.81/5 |