The lvl 4 skill description says chance to hit increased by 20%, recuperation time decreased by 8 and damage increased by 40%.

But lvl 5 has chance to hit increased by 25% and recuperation time decreased by 10. But it doesn't mention the damage increase that should, I assume is 50%.

Do you lose the extra damage modifier if you take the lvl 5 skill or is this just a typo and the devs forgot to list it?

It is just a cosmetic issue, leaving the 50% damage bonus out of the description; you do get the damage increase.

I figured as much, I just wanted to be sure. Thanks Raze for clearing this up.