| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.53/5 | 3.57/5 |
| Vol 2 | 2.65/5 | 3.66/5 |
| Vol 3 | 2.68/5 | 3.63/5 |
| Vol 4 | 2.62/5 | 3.69/5 |
| Vol 5 | 2.63/5 | 3.66/5 |
| Vol 6 | 2.68/5 | 3.70/5 |
| Vol 7 | 2.65/5 | 3.70/5 |
| Vol 8 | 2.41/5 | 3.52/5 |
| Vol 9 | 2.52/5 | 3.60/5 |
| Vol 10 | 2.68/5 | 3.83/5 |
| Vol 11 | 2.79/5 | 3.75/5 |
| Vol 12 | 2.69/5 | 3.75/5 |
| Vol 13 | 2.66/5 | 3.69/5 |
| Vol 14 | 2.82/5 | 3.72/5 |
| Vol 15 | 2.94/5 | 3.85/5 |
| Vol 16 | 2.67/5 | 3.72/5 |
| Vol 17 | 2.67/5 | 3.90/5 |
| Vol 18 | 2.76/5 | 3.67/5 |
| Vol 19 | 2.65/5 | 3.60/5 |
| Vol 20 | 2.70/5 | 3.90/5 |
| Vol 21 | 2.44/5 | 3.57/5 |
| Overall | 2.66/5 | 3.90/5 |