| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.48/5 | 4.29/5 |
| Vol 2 | 2.18/5 | 3.63/5 |
| Vol 3 | 2.65/5 | 4.22/5 |
| Vol 4 | 2.29/5 | 3.80/5 |
| Vol 5 | 2.33/5 | 4.09/5 |
| Vol 6 | 2.69/5 | 4.32/5 |
| Vol 7 | 2.66/5 | 3.94/5 |
| Vol 8 | 2.93/5 | 4.29/5 |
| Vol 9 | 2.50/5 | 4.02/5 |
| Vol 10 | 2.28/5 | 4.05/5 |
| Vol 11 | 2.75/5 | 4.12/5 |
| Vol 12 | 2.22/5 | 3.90/5 |
| Vol 13 | 2.45/5 | 4.14/5 |
| Vol 14 | 2.50/5 | 4.32/5 |
| Vol 15 | 2.67/5 | 4.19/5 |
| Vol 16 | 2.35/5 | 4.03/5 |
| Vol 17 | 2.59/5 | 4.09/5 |
| Vol 18 | 2.50/5 | 4.26/5 |
| Overall | 2.50/5 | 4.32/5 |