| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.71/5 | 4.19/5 |
| Vol 2 | 2.86/5 | 4.45/5 |
| Vol 3 | 2.90/5 | 4.48/5 |
| Vol 4 | 2.84/5 | 4.32/5 |
| Vol 5 | 3.52/5 | 4.53/5 |
| Vol 6 | 3.56/5 | 4.52/5 |
| Vol 7 | 3.24/5 | 4.49/5 |
| Vol 8 | 3.37/5 | 4.52/5 |
| Vol 9 | 3.31/5 | 4.53/5 |
| Vol 10 | 2.85/5 | 4.43/5 |
| Vol 11 | 2.87/5 | 4.46/5 |
| Vol 12 | 2.91/5 | 4.41/5 |
| Vol 13 | 3.88/5 | 4.59/5 |
| Vol 14 | 3.92/5 | 4.59/5 |
| Vol 15 | 3.24/5 | 4.52/5 |
| Vol 16 | 3.64/5 | 4.57/5 |
| Overall | 3.23/5 | 4.59/5 |