| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.57/5 | 3.48/5 |
| Vol 2 | 2.64/5 | 3.52/5 |
| Vol 3 | 2.60/5 | 3.56/5 |
| Vol 4 | 2.77/5 | 3.53/5 |
| Vol 5 | 2.70/5 | 3.52/5 |
| Vol 6 | 2.87/5 | 3.66/5 |
| Vol 7 | 3.00/5 | 3.89/5 |
| Vol 8 | 2.71/5 | 3.56/5 |
| Vol 9 | 2.94/5 | 3.61/5 |
| Vol 10 | 2.80/5 | 3.57/5 |
| Vol 11 | 2.91/5 | 3.62/5 |
| Overall | 2.77/5 | 3.89/5 |