| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.37/5 | 3.75/5 |
| Vol 2 | 2.53/5 | 4.14/5 |
| Vol 3 | 2.25/5 | 3.88/5 |
| Vol 4 | 2.23/5 | 2.98/5 |
| Vol 5 | 2.53/5 | 4.17/5 |
| Vol 6 | 2.60/5 | 4.28/5 |
| Vol 7 | 2.09/5 | 3.86/5 |
| Vol 8 | 2.45/5 | 4.06/5 |
| Vol 9 | 2.26/5 | 3.48/5 |
| Vol 10 | 2.32/5 | 3.80/5 |
| Vol 11 | 2.33/5 | 3.43/5 |
| Vol 12 | 2.45/5 | 4.22/5 |
| Vol 13 | 2.46/5 | 4.19/5 |
| Vol 14 | 2.64/5 | 4.25/5 |
| Vol 15 | 2.20/5 | 3.67/5 |
| Vol 16 | 2.45/5 | 4.14/5 |
| Vol 17 | 2.24/5 | 3.81/5 |
| Vol 18 | 2.40/5 | 3.64/5 |
| Vol 19 | 2.37/5 | 4.06/5 |
| Vol 20 | 2.36/5 | 4.19/5 |
| Vol 21 | 2.63/5 | 4.25/5 |
| Overall | 2.39/5 | 4.28/5 |