| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.40/5 | 3.72/5 |
| Vol 2 | 2.56/5 | 3.93/5 |
| Vol 3 | 2.28/5 | 3.59/5 |
| Vol 4 | 2.39/5 | 3.43/5 |
| Vol 5 | 2.02/5 | 3.37/5 |
| Vol 6 | 2.52/5 | 3.84/5 |
| Vol 7 | 2.34/5 | 3.67/5 |
| Vol 8 | 2.17/5 | 3.62/5 |
| Vol 9 | 2.54/5 | 3.79/5 |
| Vol 10 | 2.50/5 | 3.74/5 |
| Vol 11 | 2.30/5 | 3.37/5 |
| Vol 12 | 2.37/5 | 3.70/5 |
| Vol 13 | 2.10/5 | 3.47/5 |
| Vol 14 | 2.42/5 | 3.66/5 |
| Vol 15 | 1.99/5 | 3.69/5 |
| Vol 16 | 2.43/5 | 3.83/5 |
| Overall | 2.33/5 | 3.93/5 |