| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.38/5 | 4.34/5 |
| Vol 2 | 3.30/5 | 4.23/5 |
| Vol 3 | 3.06/5 | 4.02/5 |
| Vol 4 | 3.31/5 | 4.28/5 |
| Vol 5 | 3.31/5 | 4.20/5 |
| Vol 6 | 3.36/5 | 4.13/5 |
| Vol 7 | 3.43/5 | 4.23/5 |
| Vol 8 | 3.33/5 | 4.32/5 |
| Vol 9 | 3.50/5 | 4.30/5 |
| Vol 10 | 3.63/5 | 4.39/5 |
| Vol 11 | 3.48/5 | 4.30/5 |
| Vol 12 | 3.49/5 | 4.30/5 |
| Vol 13 | 3.37/5 | 4.28/5 |
| Vol 14 | 3.44/5 | 4.27/5 |
| Vol 15 | 3.40/5 | 4.26/5 |
| Vol 16 | 3.46/5 | 4.23/5 |
| Vol 17 | 3.49/5 | 4.24/5 |
| Vol 18 | 3.40/5 | 4.07/5 |
| Vol 19 | 3.54/5 | 4.30/5 |
| Vol 20 | 3.46/5 | 4.16/5 |
| Overall | 3.41/5 | 4.39/5 |