| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.76/5 | 4.46/5 |
| Vol 2 | 3.89/5 | 4.50/5 |
| Vol 3 | 3.69/5 | 4.41/5 |
| Vol 4 | 3.98/5 | 4.53/5 |
| Vol 5 | 3.56/5 | 4.37/5 |
| Vol 6 | 3.70/5 | 4.42/5 |
| Vol 7 | 3.75/5 | 4.45/5 |
| Vol 8 | 3.79/5 | 4.47/5 |
| Vol 9 | 3.84/5 | 4.48/5 |
| Vol 10 | 3.71/5 | 4.45/5 |
| Vol 11 | 3.69/5 | 4.43/5 |
| Vol 12 | 3.87/5 | 4.50/5 |
| Overall | 3.77/5 | 4.53/5 |