I’ve been looking at the tooltips for Retreat Shot, Concentrared Fire, and Wild Shot, and all that’s shown are damage increases.
I was wondering if there was any other effects for increasing skill levels. Like does Conc Fire/Wild Shot start out at 1 shot and you gain 1 hit a level? Does Retreat Shot get more duration or a larger aoe?
Retreat shot’s level determines how many mobs you can hit with it. Lv5 = 5 mobs simultaneously. As for concentrated fire, it works exactly like multishot.
Thanks man. Exactly the answer I was looking for. 
Forgot to mention, the duration of retreat shot doesn’t increase but the skill itself lasts about a good 10s putting it onto a good 30s CD when you finish even though the tooltip says 40s cd. Of course that is if you hold down the key for the entire duration (it’s buggy atm where sometimes you press it once and it keeps shooting and other times it shoots twice and cancels going onto a 40s cd). As for aoe, it’s massive - narrow but can hit about an entire screen away. As for wild shot, I’ll have to test it later once my server goes up although I don’t recall seeing the charged level above my head like how multishot and concentrated fire has it.
Ah yes, I know about the range since I’m a SR myself. However, I just hit it before reset and was testing out lv1 Retreat Shot, and I was like “This skill can’t be this bad”