| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.82/5 | 4.45/5 |
| Vol 2 | 2.79/5 | 4.50/5 |
| Vol 3 | 3.69/5 | 4.62/5 |
| Vol 4 | 2.91/5 | 4.57/5 |
| Vol 5 | 2.84/5 | 4.41/5 |
| Vol 6 | 2.87/5 | 4.44/5 |
| Vol 7 | 3.65/5 | 4.61/5 |
| Vol 8 | 3.17/5 | 4.56/5 |
| Vol 9 | 2.99/5 | 4.53/5 |
| Vol 10 | 2.98/5 | 4.45/5 |
| Vol 11 | 2.86/5 | 4.48/5 |
| Vol 12 | 4.05/5 | 4.65/5 |
| Vol 13 | 2.94/5 | 4.46/5 |
| Vol 14 | 2.59/5 | 4.43/5 |
| Vol 15 | 3.20/5 | 4.52/5 |
| Vol 16 | 2.58/5 | 4.48/5 |
| Vol 17 | 3.05/5 | 4.59/5 |
| Vol 18 | 3.94/5 | 4.64/5 |
| Vol 19 | 2.67/5 | 4.43/5 |
| Vol 20 | 2.87/5 | 4.43/5 |
| Vol 21 | 2.82/5 | 4.46/5 |
| Vol 22 | 3.28/5 | 4.50/5 |
| Vol 23 | 3.15/5 | 4.51/5 |
| Vol 24 | 3.15/5 | 4.45/5 |
| Overall | 3.09/5 | 4.65/5 |