| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.85/5 | 4.52/5 |
| Vol 2 | 3.01/5 | 4.55/5 |
| Vol 3 | 3.10/5 | 4.67/5 |
| Vol 4 | 2.86/5 | 4.60/5 |
| Vol 5 | 2.83/5 | 4.50/5 |
| Vol 6 | 2.73/5 | 4.43/5 |
| Vol 7 | 2.94/5 | 4.62/5 |
| Vol 8 | 3.13/5 | 4.75/5 |
| Vol 9 | 2.93/5 | 4.56/5 |
| Vol 10 | 2.71/5 | 3.87/5 |
| Vol 11 | 2.83/5 | 4.37/5 |
| Vol 12 | 2.89/5 | 4.50/5 |
| Vol 13 | 3.47/5 | 4.73/5 |
| Vol 14 | 2.78/5 | 4.50/5 |
| Vol 15 | 2.72/5 | 4.37/5 |
| Vol 16 | 2.95/5 | 4.62/5 |
| Vol 17 | 2.94/5 | 4.63/5 |
| Vol 18 | 3.10/5 | 4.70/5 |
| Vol 19 | 3.10/5 | 4.68/5 |
| Vol 20 | 2.93/5 | 4.47/5 |
| Vol 21 | 2.96/5 | 4.60/5 |
| Overall | 2.94/5 | 4.75/5 |