| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.83/5 | 3.78/5 |
| Vol 2 | 2.57/5 | 3.67/5 |
| Vol 3 | 2.79/5 | 3.73/5 |
| Vol 4 | 2.45/5 | 3.68/5 |
| Vol 5 | 2.56/5 | 3.79/5 |
| Vol 6 | 2.60/5 | 3.81/5 |
| Vol 7 | 2.52/5 | 3.66/5 |
| Vol 8 | 2.57/5 | 3.67/5 |
| Vol 9 | 2.51/5 | 3.69/5 |
| Vol 10 | 2.37/5 | 3.66/5 |
| Vol 11 | 2.76/5 | 4.02/5 |
| Vol 12 | 2.90/5 | 4.27/5 |
| Vol 13 | 2.75/5 | 4.27/5 |
| Vol 14 | 2.98/5 | 4.31/5 |
| Vol 15 | 2.99/5 | 4.27/5 |
| Vol 16 | 3.10/5 | 4.25/5 |
| Overall | 2.70/5 | 4.31/5 |