| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.02/5 | 4.01/5 |
| Vol 2 | 2.96/5 | 3.84/5 |
| Vol 3 | 2.83/5 | 3.90/5 |
| Vol 4 | 2.89/5 | 3.86/5 |
| Vol 5 | 2.99/5 | 3.77/5 |
| Vol 6 | 2.77/5 | 3.81/5 |
| Vol 7 | 2.60/5 | 3.61/5 |
| Vol 8 | 2.80/5 | 3.88/5 |
| Vol 9 | 2.73/5 | 3.78/5 |
| Vol 10 | 2.92/5 | 3.91/5 |
| Vol 11 | 2.65/5 | 3.94/5 |
| Vol 12 | 2.78/5 | 3.76/5 |
| Vol 13 | 2.77/5 | 3.87/5 |
| Vol 14 | 2.94/5 | 3.95/5 |
| Vol 15 | 2.93/5 | 3.85/5 |
| Vol 16 | 2.68/5 | 3.67/5 |
| Vol 17 | 2.90/5 | 3.88/5 |
| Vol 18 | 2.76/5 | 3.79/5 |
| Vol 19 | 2.88/5 | 3.89/5 |
| Overall | 2.83/5 | 4.01/5 |