this file handles exp values per level. i took a look at it and decrypted how it works entirely. after the first line which does nothing. (ok i lied here, i know what 1 part of the first line does and may help in adding levels possibly)
01 00 00 00 64 00 00 00 00 00 00 00 00 00 00 00
this is the level in hex
this is the exp needed for next level
this is the exp you should be greater than or equal to be at this level
attribute points to give.
all values are in int32 format so use a converter to go from hex to int32. regular int converter should do it.
haven't tested this ingame. just know by checking the data out.
it was very easy to figure this out too me less than 20mins to understand this file.