| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 1.86/5 | 4.28/5 |
| Vol 2 | 1.84/5 | 3.80/5 |
| Vol 3 | 2.15/5 | 4.40/5 |
| Vol 4 | 2.01/5 | 3.68/5 |
| Vol 5 | 2.28/5 | 4.37/5 |
| Vol 6 | 1.90/5 | 3.18/5 |
| Vol 7 | 2.23/5 | 4.28/5 |
| Vol 8 | 1.99/5 | 4.45/5 |
| Vol 9 | 2.08/5 | 4.18/5 |
| Vol 10 | 1.92/5 | 3.10/5 |
| Vol 11 | 2.20/5 | 4.41/5 |
| Vol 12 | 1.88/5 | 3.28/5 |
| Vol 13 | 2.26/5 | 4.40/5 |
| Vol 14 | 2.50/5 | 4.42/5 |
| Vol 15 | 2.50/5 | 4.46/5 |
| Vol 16 | 2.52/5 | 4.19/5 |
| Vol 17 | 2.31/5 | 4.00/5 |
| Vol 18 | 2.21/5 | 4.29/5 |
| Vol 19 | 2.22/5 | 4.72/5 |
| Vol 20 | 2.22/5 | 4.45/5 |
| Overall | 2.15/5 | 4.72/5 |