| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 1.23/5 | 1.63/5 |
| Vol 2 | 1.45/5 | 2.58/5 |
| Vol 3 | 1.30/5 | 2.40/5 |
| Vol 4 | 1.54/5 | 2.88/5 |
| Vol 5 | 1.50/5 | 2.51/5 |
| Vol 6 | 1.69/5 | 2.58/5 |
| Vol 7 | 1.47/5 | 2.66/5 |
| Vol 8 | 1.46/5 | 2.56/5 |
| Vol 9 | 1.42/5 | 2.37/5 |
| Vol 10 | 1.80/5 | 2.65/5 |
| Vol 11 | 1.40/5 | 2.58/5 |
| Vol 12 | 1.73/5 | 2.71/5 |
| Vol 13 | 1.40/5 | 2.59/5 |
| Vol 14 | 1.47/5 | 2.88/5 |
| Vol 15 | 1.53/5 | 2.80/5 |
| Vol 16 | 1.96/5 | 2.98/5 |
| Vol 17 | 1.85/5 | 3.41/5 |
| Vol 18 | 1.54/5 | 2.63/5 |
| Vol 19 | 1.74/5 | 2.83/5 |
| Vol 20 | 1.08/5 | 1.85/5 |
| Overall | 1.56/5 | 3.41/5 |