| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.60/5 | 4.50/5 |
| Vol 2 | 2.34/5 | 4.31/5 |
| Vol 3 | 2.55/5 | 4.45/5 |
| Vol 4 | 2.31/5 | 4.50/5 |
| Vol 5 | 2.42/5 | 4.00/5 |
| Vol 6 | 2.65/5 | 4.56/5 |
| Vol 7 | 3.08/5 | 4.74/5 |
| Vol 8 | 2.85/5 | 4.50/5 |
| Vol 9 | 2.75/5 | 4.48/5 |
| Vol 10 | 2.90/5 | 4.66/5 |
| Vol 11 | 3.15/5 | 4.63/5 |
| Vol 12 | 2.98/5 | 4.70/5 |
| Vol 13 | 2.65/5 | 4.61/5 |
| Vol 14 | 2.70/5 | 4.64/5 |
| Vol 15 | 2.34/5 | 3.90/5 |
| Vol 16 | 2.26/5 | 4.22/5 |
| Vol 17 | 2.76/5 | 4.45/5 |
| Vol 18 | 2.71/5 | 4.56/5 |
| Overall | 2.75/5 | 4.74/5 |