| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.38/5 | 4.27/5 |
| Vol 2 | 2.82/5 | 4.40/5 |
| Vol 3 | 2.86/5 | 4.36/5 |
| Vol 4 | 2.67/5 | 4.29/5 |
| Vol 5 | 2.83/5 | 4.30/5 |
| Vol 6 | 3.22/5 | 4.51/5 |
| Vol 7 | 3.68/5 | 4.56/5 |
| Vol 8 | 2.98/5 | 4.46/5 |
| Vol 9 | 3.71/5 | 4.56/5 |
| Vol 10 | 2.94/5 | 4.42/5 |
| Vol 11 | 3.00/5 | 4.47/5 |
| Vol 12 | 2.82/5 | 4.40/5 |
| Vol 13 | 3.14/5 | 4.46/5 |
| Vol 14 | 2.80/5 | 4.40/5 |
| Vol 15 | 3.00/5 | 4.48/5 |
| Vol 16 | 3.58/5 | 4.55/5 |
| Vol 17 | 2.87/5 | 4.45/5 |
| Vol 18 | 3.62/5 | 4.54/5 |
| Vol 19 | 2.90/5 | 4.42/5 |
| Vol 20 | 2.89/5 | 4.43/5 |
| Vol 21 | 3.27/5 | 4.49/5 |
| Vol 22 | 3.32/5 | 4.48/5 |
| Vol 23 | 2.79/5 | 4.32/5 |
| Overall | 3.05/5 | 4.56/5 |