| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.09/5 | 3.50/5 |
| Vol 2 | 2.30/5 | 4.21/5 |
| Vol 3 | 1.96/5 | 3.97/5 |
| Vol 4 | 1.75/5 | 2.86/5 |
| Vol 5 | 1.80/5 | 2.90/5 |
| Vol 6 | 1.76/5 | 3.33/5 |
| Vol 7 | 1.83/5 | 3.75/5 |
| Vol 8 | 1.87/5 | 2.90/5 |
| Vol 9 | 1.85/5 | 4.00/5 |
| Vol 10 | 2.31/5 | 4.19/5 |
| Vol 11 | 2.11/5 | 3.60/5 |
| Vol 12 | 2.15/5 | 4.12/5 |
| Vol 13 | 2.33/5 | 4.12/5 |
| Vol 14 | 2.02/5 | 3.25/5 |
| Vol 15 | 3.19/5 | 4.44/5 |
| Vol 16 | 2.13/5 | 3.86/5 |
| Overall | 2.09/5 | 4.44/5 |