| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.98/5 | 4.44/5 |
| Vol 2 | 2.93/5 | 4.48/5 |
| Vol 3 | 3.75/5 | 4.59/5 |
| Vol 4 | 2.82/5 | 4.41/5 |
| Vol 5 | 3.86/5 | 4.58/5 |
| Vol 6 | 3.45/5 | 4.57/5 |
| Vol 7 | 3.56/5 | 4.56/5 |
| Vol 8 | 3.23/5 | 4.54/5 |
| Vol 9 | 2.98/5 | 4.55/5 |
| Vol 10 | 2.78/5 | 4.41/5 |
| Vol 11 | 2.84/5 | 4.45/5 |
| Vol 12 | 2.87/5 | 4.49/5 |
| Vol 13 | 3.06/5 | 4.50/5 |
| Vol 14 | 3.39/5 | 4.51/5 |
| Vol 15 | 2.91/5 | 4.41/5 |
| Vol 16 | 3.70/5 | 4.56/5 |
| Overall | 3.19/5 | 4.59/5 |