Yes. You use a point to better the odds.
I had to go read thru. I actually did have a method for leveling. ?It is on page 5 under Reward.
Reward.
Experience (exp) point rewards for success should reflect the difficulty of the challenge.
For an easy challenge of 1, Grant 5 exp.
Increment as the challenge becomes harder.
10 exp for a 2. 15 exp for a 3, 20 exp for a 4
and 25 exp for a hard challenge of 5.
Use exponential increments to level up.
Start at 0, then require 100 for level One. 300 for level Two 600 for level Three and so on.