| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.37/5 | 3.51/5 |
| Vol 2 | 2.46/5 | 3.58/5 |
| Vol 3 | 2.30/5 | 3.49/5 |
| Vol 4 | 2.16/5 | 3.37/5 |
| Vol 5 | 2.17/5 | 3.50/5 |
| Vol 6 | 2.39/5 | 3.77/5 |
| Vol 7 | 2.29/5 | 3.51/5 |
| Vol 8 | 2.51/5 | 3.68/5 |
| Vol 9 | 2.41/5 | 3.64/5 |
| Vol 10 | 1.96/5 | 3.29/5 |
| Vol 11 | 2.56/5 | 4.01/5 |
| Vol 12 | 2.25/5 | 3.72/5 |
| Vol 13 | 1.95/5 | 3.25/5 |
| Vol 14 | 2.30/5 | 3.57/5 |
| Vol 15 | 2.36/5 | 3.68/5 |
| Vol 16 | 1.98/5 | 3.56/5 |
| Vol 17 | 2.59/5 | 4.10/5 |
| Vol 18 | 2.37/5 | 3.78/5 |
| Overall | 2.30/5 | 4.10/5 |