| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.43/5 | 4.55/5 |
| Vol 2 | 2.97/5 | 4.47/5 |
| Vol 3 | 3.24/5 | 4.52/5 |
| Vol 4 | 2.82/5 | 4.50/5 |
| Vol 5 | 2.86/5 | 4.47/5 |
| Vol 6 | 2.89/5 | 4.45/5 |
| Vol 7 | 2.65/5 | 4.38/5 |
| Vol 8 | 2.97/5 | 4.43/5 |
| Vol 9 | 2.59/5 | 4.36/5 |
| Vol 10 | 2.91/5 | 4.45/5 |
| Vol 11 | 2.78/5 | 4.45/5 |
| Vol 12 | 2.35/5 | 4.17/5 |
| Vol 13 | 2.61/5 | 4.30/5 |
| Vol 14 | 2.89/5 | 4.44/5 |
| Vol 15 | 3.31/5 | 4.55/5 |
| Vol 16 | 2.57/5 | 4.32/5 |
| Vol 17 | 2.66/5 | 4.41/5 |
| Vol 18 | 2.60/5 | 4.39/5 |
| Vol 19 | 2.40/5 | 4.35/5 |
| Vol 20 | 2.84/5 | 4.47/5 |
| Overall | 2.82/5 | 4.55/5 |