Fourth Boss Earns you 15 XP Kill the fourt boss in level 16
      | Rank | Achieved by | Reached | 
|---|---|---|
| 1 | 
           | 
        21 times | 
| 2 | 
           | 
        15 times | 
| 3 | 
           | 
        14 times | 
| 4 | 
           | 
        13 times | 
| 5 | 
           | 
        13 times | 
| 6 | 
           | 
        12 times | 
| 7 | 
           | 
        10 times | 
| 8 | 
           | 
        9 times | 
| 9 | 
           | 
        8 times | 
| 10 | 
           | 
        7 times |