I will do another account to check it out. Don't remember exactly.
Edit:
Account lvl 2:
18 hardcore
10 charm
14 how to.
I lvled up to 3:
27 hardcore
15 charm
21 how to.
lvl 4 :
36 hardcore
20 charm
28 how to.
Maybe it's linear (like +9/+5/+7 per level for swagger), I don't know.