| Level | BAB | Fort. | Ref. | Will | Special |
| 1 | +1 | +2 | +0 | +0 | Bonus feat |
| 2 | +2 | +3 | +0 | +0 | +2 to Decipher Script and Survival |
| 3 | +3 | +3 | +1 | +1 | -- |
| 4 | +4 | +4 | +1 | +1 | Bonus feat |
| 5 | +5 | +4 | +1 | +1 | -- |
| 6 | +6/+1 | +5 | +2 | +2 | +2 to Craft and Survival |
| 7 | +7/+2 | +5 | +2 | +2 | -- |
| 8 | +8/+3 | +6 | +2 | +2 | Bonus feat |
| 9 | +9/+4 | +6 | +3 | +3 | -- |
| 10 | +10/+5 | +7 | +3 | +3 | Bonus feat |
| 11 | +11/+6/+1 | +7 | +3 | +3 | -- |
| 12 | +12/+7/+2 | +8 | +4 | +4 | Familiar |
| 13 | +13/+8/+3 | +8 | +4 | +4 | -- |
| 14 | +14/+9/+4 | +9 | +4 | +4 | +2 to Decipher Script and Speak Language |
| 15 | +15/+10/+5 | +9 | +5 | +5 | -- |
| 16 | +16/+11/+6/+1 | +10 | +5 | +5 | Bonus feat |
| 17 | +17/+12/+7/+2 | +10 | +5 | +5 | -- |
| 18 | +18/+13/+8/+3 | +11 | +6 | +6 | Uncanny Dodge |
| 19 | +19/+14/+9/+4 | +11 | +6 | +6 | -- |
| 20 | +20/+15/+10/+5 | +12 | +6 | +6 | Bonus feat |