Classes

Classes are gained after leveling hero up a few times. .* Note that the time bonus appears to be multiplicative instead of addition so its the % of the current time.

e.g 10% of 100 = 90 then 10% of 90 = 81. Doing this will mean 100% is not really 100% but a smaller value. Effective bonus is what you actually get and it rounds. so 99%x97% = 96.03%, round this up to give 97% or 3% from the 100% you start with.