| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.84/5 | 4.29/5 |
| Vol 2 | 2.89/5 | 4.22/5 |
| Vol 3 | 2.96/5 | 4.22/5 |
| Vol 4 | 3.30/5 | 4.59/5 |
| Vol 5 | 3.08/5 | 4.49/5 |
| Vol 6 | 3.60/5 | 4.59/5 |
| Vol 7 | 3.58/5 | 4.53/5 |
| Vol 8 | 3.41/5 | 4.40/5 |
| Vol 9 | 3.24/5 | 4.46/5 |
| Vol 10 | 3.38/5 | 4.54/5 |
| Vol 11 | 3.39/5 | 4.53/5 |
| Vol 12 | 3.50/5 | 4.59/5 |
| Vol 13 | 3.42/5 | 4.54/5 |
| Vol 14 | 3.33/5 | 4.64/5 |
| Vol 15 | 3.76/5 | 4.65/5 |
| Overall | 3.29/5 | 4.65/5 |