| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.28/5 | 3.66/5 |
| Vol 2 | 2.49/5 | 3.76/5 |
| Vol 3 | 2.39/5 | 3.72/5 |
| Vol 4 | 2.57/5 | 3.84/5 |
| Vol 5 | 2.37/5 | 3.67/5 |
| Vol 6 | 2.36/5 | 3.45/5 |
| Vol 7 | 2.60/5 | 3.83/5 |
| Vol 8 | 2.44/5 | 3.56/5 |
| Vol 9 | 2.10/5 | 3.60/5 |
| Vol 10 | 2.46/5 | 3.50/5 |
| Vol 11 | 2.35/5 | 3.74/5 |
| Vol 12 | 2.58/5 | 3.88/5 |
| Vol 13 | 2.40/5 | 3.70/5 |
| Vol 14 | 2.28/5 | 3.53/5 |
| Vol 15 | 2.27/5 | 3.73/5 |
| Vol 16 | 2.59/5 | 3.93/5 |
| Overall | 2.41/5 | 3.93/5 |