| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.18/5 | 4.03/5 |
| Vol 2 | 2.32/5 | 3.92/5 |
| Vol 3 | 2.49/5 | 3.69/5 |
| Vol 4 | 2.55/5 | 4.00/5 |
| Vol 5 | 2.68/5 | 3.85/5 |
| Vol 6 | 2.69/5 | 3.87/5 |
| Vol 7 | 2.84/5 | 3.95/5 |
| Vol 8 | 2.60/5 | 3.95/5 |
| Vol 9 | 2.94/5 | 4.03/5 |
| Vol 10 | 2.75/5 | 4.09/5 |
| Vol 11 | 2.89/5 | 4.30/5 |
| Vol 12 | 2.93/5 | 4.14/5 |
| Vol 13 | 2.79/5 | 3.94/5 |
| Vol 14 | 2.84/5 | 4.21/5 |
| Vol 15 | 2.98/5 | 4.00/5 |
| Vol 16 | 2.88/5 | 4.27/5 |
| Vol 17 | 3.24/5 | 4.43/5 |
| Vol 18 | 2.98/5 | 4.00/5 |
| Vol 19 | 2.96/5 | 4.32/5 |
| Vol 20 | 2.75/5 | 3.91/5 |
| Vol 21 | 2.89/5 | 4.23/5 |
| Overall | 2.77/5 | 4.43/5 |