| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.00/5 | 4.32/5 |
| Vol 2 | 2.19/5 | 4.21/5 |
| Vol 3 | 2.29/5 | 4.19/5 |
| Vol 4 | 2.33/5 | 3.96/5 |
| Vol 5 | 2.41/5 | 4.09/5 |
| Vol 6 | 2.49/5 | 4.19/5 |
| Vol 7 | 2.34/5 | 4.05/5 |
| Vol 8 | 2.50/5 | 4.28/5 |
| Vol 9 | 2.44/5 | 4.25/5 |
| Vol 10 | 2.48/5 | 4.22/5 |
| Vol 11 | 2.35/5 | 4.25/5 |
| Vol 12 | 2.50/5 | 4.30/5 |
| Vol 13 | 2.33/5 | 3.94/5 |
| Vol 14 | 2.52/5 | 4.29/5 |
| Vol 15 | 2.48/5 | 3.95/5 |
| Vol 16 | 2.55/5 | 4.23/5 |
| Vol 17 | 2.72/5 | 4.39/5 |
| Vol 18 | 2.41/5 | 4.25/5 |
| Overall | 2.41/5 | 4.39/5 |