| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.19/5 | 4.21/5 |
| Vol 2 | 2.28/5 | 4.09/5 |
| Vol 3 | 2.31/5 | 3.80/5 |
| Vol 4 | 2.28/5 | 4.32/5 |
| Vol 5 | 2.03/5 | 4.14/5 |
| Vol 6 | 2.28/5 | 4.21/5 |
| Vol 7 | 2.32/5 | 4.36/5 |
| Vol 8 | 2.26/5 | 4.21/5 |
| Vol 9 | 2.45/5 | 4.17/5 |
| Vol 10 | 2.15/5 | 4.14/5 |
| Vol 11 | 2.06/5 | 4.21/5 |
| Vol 12 | 2.23/5 | 4.30/5 |
| Vol 13 | 1.95/5 | 4.25/5 |
| Vol 14 | 2.12/5 | 4.30/5 |
| Vol 15 | 2.09/5 | 3.57/5 |
| Vol 16 | 2.41/5 | 4.23/5 |
| Vol 17 | 2.46/5 | 4.27/5 |
| Vol 18 | 2.36/5 | 4.27/5 |
| Overall | 2.24/5 | 4.36/5 |