| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.74/5 | 3.68/5 |
| Vol 2 | 2.71/5 | 3.60/5 |
| Vol 3 | 2.77/5 | 3.69/5 |
| Vol 4 | 2.94/5 | 3.95/5 |
| Vol 5 | 2.83/5 | 3.79/5 |
| Vol 6 | 2.85/5 | 3.72/5 |
| Vol 7 | 3.04/5 | 3.81/5 |
| Vol 8 | 2.91/5 | 3.91/5 |
| Vol 9 | 2.84/5 | 3.75/5 |
| Vol 10 | 2.81/5 | 3.72/5 |
| Vol 11 | 2.88/5 | 3.78/5 |
| Vol 12 | 2.84/5 | 3.80/5 |
| Vol 13 | 2.79/5 | 3.91/5 |
| Vol 14 | 2.91/5 | 4.01/5 |
| Vol 15 | 2.88/5 | 4.05/5 |
| Vol 16 | 2.97/5 | 3.95/5 |
| Vol 17 | 3.11/5 | 3.87/5 |
| Vol 18 | 2.86/5 | 3.79/5 |
| Vol 19 | 3.14/5 | 4.01/5 |
| Vol 20 | 3.01/5 | 3.93/5 |
| Vol 21 | 2.85/5 | 3.71/5 |
| Vol 22 | 2.94/5 | 3.97/5 |
| Overall | 2.90/5 | 3.84/5 |