| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.76/5 | 4.38/5 |
| Vol 2 | 2.96/5 | 4.38/5 |
| Vol 3 | 2.48/5 | 3.94/5 |
| Vol 4 | 2.80/5 | 4.00/5 |
| Vol 5 | 2.54/5 | 3.98/5 |
| Vol 6 | 2.80/5 | 4.16/5 |
| Vol 7 | 2.38/5 | 3.48/5 |
| Vol 8 | 2.68/5 | 4.00/5 |
| Vol 9 | 2.51/5 | 3.77/5 |
| Vol 10 | 2.47/5 | 3.94/5 |
| Vol 11 | 2.65/5 | 4.29/5 |
| Vol 12 | 2.58/5 | 4.04/5 |
| Vol 13 | 2.75/5 | 4.32/5 |
| Vol 14 | 2.46/5 | 4.08/5 |
| Vol 15 | 3.19/5 | 4.43/5 |
| Vol 16 | 3.03/5 | 4.24/5 |
| Vol 17 | 2.80/5 | 4.38/5 |
| Vol 18 | 2.86/5 | 4.46/5 |
| Vol 19 | 2.60/5 | 4.23/5 |
| Vol 20 | 2.44/5 | 3.97/5 |
| Vol 21 | 2.41/5 | 3.91/5 |
| Vol 22 | 2.85/5 | 4.35/5 |
| Vol 23 | 2.74/5 | 4.61/5 |
| Overall | 2.68/5 | 4.61/5 |