| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.93/5 | 4.45/5 |
| Vol 2 | 2.91/5 | 4.41/5 |
| Vol 3 | 3.30/5 | 4.51/5 |
| Vol 4 | 2.84/5 | 4.45/5 |
| Vol 5 | 3.40/5 | 4.52/5 |
| Vol 6 | 3.50/5 | 4.52/5 |
| Vol 7 | 3.04/5 | 4.42/5 |
| Vol 8 | 3.50/5 | 4.55/5 |
| Vol 9 | 2.80/5 | 4.36/5 |
| Vol 10 | 2.87/5 | 4.43/5 |
| Vol 11 | 2.90/5 | 4.40/5 |
| Vol 12 | 2.98/5 | 4.36/5 |
| Vol 13 | 3.19/5 | 4.35/5 |
| Vol 14 | 3.35/5 | 4.43/5 |
| Overall | 3.11/5 | 4.55/5 |