Challenge levels are obstacles in your Monster's level growth. These 4 levels require a lot more EXP to get through and can provide you with a hard time. Often, the reccomendations to quickly get through challenge levels are simply defeating or catching a Zenith or a Legendary Monster for a lot of EXP. This method takes longer, but is more effective and has a lot of profit in gold as well. Another way of getting through them is by buying an EXP Max which costs 250,000 gold. EXP Maxes can quickly get you through a level in a single click. Although their price is high, this is the best shortcut to increasing your level.
EXP Tables
After calculating the EXP tables, I have found the approximate ammount of EXP required to get through the challenge levels.
For levels 24-25
| EXP Speed | EXP required |
| Ultra Fast | 13,941 |
| Very Fast | 17,427 |
| Fast | 20,912 |
| Normal | 24,397 |
| Slow | 27,882 |
| Very Slow | 33,459 |
For levels 49-50
| EXP Speed | EXP required |
| Ultra Fast | 1111,762 |
| Very Fast | 139,704 |
| Fast | 167,644 |
| Normal | 195,584 |
| Slow | 223,524 |
| Very Slow | 268,230 |
For levels 69-70
| EXP Speed | EXP required |
| Ultra Fast | 309,179 |
| Very Fast | 386,476 |
| Fast | 463,770 |
| Normal | 541,064 |
| Slow | 618,358 |
| Very Slow | 742,032 |
For levels 84-85
| EXP Speed | EXP required |
| Ultra Fast | 559,948 |
| Very Fast | 699,813 |
| Fast | 839,774 |
| Normal | 979,774 |
| Slow | 1,119,696 |
| Very Slow | 1,343,636 |