| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.78/5 | 4.26/5 |
| Vol 2 | 2.93/5 | 4.52/5 |
| Vol 3 | 2.97/5 | 4.55/5 |
| Vol 4 | 2.91/5 | 4.39/5 |
| Vol 5 | 3.59/5 | 4.60/5 |
| Vol 6 | 3.63/5 | 4.59/5 |
| Vol 7 | 3.31/5 | 4.56/5 |
| Vol 8 | 3.44/5 | 4.59/5 |
| Vol 9 | 3.38/5 | 4.60/5 |
| Vol 10 | 2.92/5 | 4.50/5 |
| Vol 11 | 2.94/5 | 4.53/5 |
| Vol 12 | 2.98/5 | 4.48/5 |
| Vol 13 | 3.95/5 | 4.66/5 |
| Vol 14 | 3.99/5 | 4.66/5 |
| Vol 15 | 3.31/5 | 4.59/5 |
| Vol 16 | 3.71/5 | 4.64/5 |
| Overall | 3.24/5 | 4.66/5 |