| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.36/5 | 4.29/5 |
| Vol 2 | 3.01/5 | 4.67/5 |
| Vol 3 | 2.85/5 | 4.52/5 |
| Vol 4 | 2.99/5 | 4.63/5 |
| Vol 5 | 2.96/5 | 4.62/5 |
| Vol 6 | 2.86/5 | 4.53/5 |
| Vol 7 | 2.82/5 | 4.43/5 |
| Vol 8 | 2.81/5 | 4.41/5 |
| Vol 9 | 2.79/5 | 4.45/5 |
| Vol 10 | 3.09/5 | 4.67/5 |
| Vol 11 | 2.86/5 | 4.52/5 |
| Vol 12 | 2.78/5 | 4.47/5 |
| Vol 13 | 2.89/5 | 4.64/5 |
| Vol 14 | 3.18/5 | 4.75/5 |
| Vol 15 | 2.63/5 | 4.29/5 |
| Vol 16 | 2.84/5 | 4.47/5 |
| Vol 17 | 2.64/5 | 4.29/5 |
| Vol 18 | 2.77/5 | 4.39/5 |
| Vol 19 | 2.72/5 | 4.41/5 |
| Vol 20 | 2.92/5 | 4.58/5 |
| Overall | 2.86/5 | 4.75/5 |