| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.50/5 | 3.70/5 |
| Vol 2 | 2.27/5 | 3.51/5 |
| Vol 3 | 2.21/5 | 3.53/5 |
| Vol 4 | 2.39/5 | 3.63/5 |
| Vol 5 | 2.37/5 | 3.74/5 |
| Vol 6 | 2.22/5 | 3.43/5 |
| Vol 7 | 2.35/5 | 3.66/5 |
| Vol 8 | 2.43/5 | 3.85/5 |
| Vol 9 | 2.46/5 | 3.75/5 |
| Vol 10 | 2.47/5 | 3.65/5 |
| Vol 11 | 2.48/5 | 3.80/5 |
| Vol 12 | 2.31/5 | 3.59/5 |
| Vol 13 | 2.72/5 | 4.02/5 |
| Overall | 2.40/5 | 4.02/5 |