| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.86/5 | 4.23/5 |
| Vol 2 | 3.00/5 | 4.38/5 |
| Vol 3 | 2.50/5 | 4.04/5 |
| Vol 4 | 2.95/5 | 4.32/5 |
| Vol 5 | 2.12/5 | 3.63/5 |
| Vol 6 | 3.00/5 | 4.36/5 |
| Vol 7 | 2.94/5 | 4.23/5 |
| Vol 8 | 2.44/5 | 3.60/5 |
| Vol 9 | 2.92/5 | 4.23/5 |
| Vol 10 | 2.67/5 | 4.10/5 |
| Vol 11 | 2.43/5 | 3.88/5 |
| Vol 12 | 2.33/5 | 4.25/5 |
| Vol 13 | 2.50/5 | 3.67/5 |
| Vol 14 | 2.79/5 | 4.37/5 |
| Vol 15 | 3.50/5 | 4.47/5 |
| Vol 16 | 3.21/5 | 3.99/5 |
| Vol 17 | 2.56/5 | 4.07/5 |
| Vol 18 | 2.70/5 | 4.30/5 |
| Overall | 2.75/5 | 4.47/5 |