| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.74/5 | 4.43/5 |
| Vol 2 | 2.68/5 | 4.38/5 |
| Vol 3 | 3.00/5 | 4.52/5 |
| Vol 4 | 2.44/5 | 4.29/5 |
| Vol 5 | 2.91/5 | 4.52/5 |
| Vol 6 | 2.55/5 | 4.27/5 |
| Vol 7 | 2.79/5 | 4.41/5 |
| Vol 8 | 2.76/5 | 4.44/5 |
| Vol 9 | 3.09/5 | 4.54/5 |
| Vol 10 | 2.69/5 | 4.36/5 |
| Vol 11 | 2.75/5 | 4.36/5 |
| Vol 12 | 2.77/5 | 4.41/5 |
| Vol 13 | 2.44/5 | 4.31/5 |
| Vol 14 | 2.48/5 | 4.25/5 |
| Vol 15 | 2.82/5 | 4.48/5 |
| Vol 16 | 2.60/5 | 4.30/5 |
| Vol 17 | 2.38/5 | 4.12/5 |
| Vol 18 | 2.65/5 | 4.42/5 |
| Vol 19 | 2.59/5 | 4.36/5 |
| Vol 20 | 2.80/5 | 4.53/5 |
| Overall | 2.70/5 | 4.54/5 |