| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.40/5 | 4.36/5 |
| Vol 2 | 3.15/5 | 4.31/5 |
| Vol 3 | 3.37/5 | 4.43/5 |
| Vol 4 | 3.57/5 | 4.50/5 |
| Vol 5 | 3.10/5 | 4.20/5 |
| Vol 6 | 3.38/5 | 4.38/5 |
| Vol 7 | 3.47/5 | 4.39/5 |
| Vol 8 | 3.57/5 | 4.48/5 |
| Vol 9 | 3.68/5 | 4.51/5 |
| Vol 10 | 3.55/5 | 4.47/5 |
| Vol 11 | 2.80/5 | 4.19/5 |
| Vol 12 | 3.28/5 | 4.33/5 |
| Vol 13 | 3.45/5 | 4.47/5 |
| Vol 14 | 3.57/5 | 4.49/5 |
| Vol 15 | 3.55/5 | 4.49/5 |
| Vol 16 | 2.91/5 | 4.12/5 |
| Overall | 3.36/5 | 4.51/5 |