I am trying to launch my character left or right, but it only launches the character left or right in World direction. My goal is to launch the character left or right of the character’s current rotation, rather than world direction.
Just after your Get Control Rotation node, you can add a “Get Right Vector” to find the local right vector of your character 
I can’t figure out how to connect it properly to velocity. Connecting it straight to the velocity node does not work. If i connect it to velocity the 1000 movement value is no longer in the action.
The node “Get Right Vector” will give you a vector of a length of 1, you just have to multiply it by a value, depending how far you want to launch your character.
In my exemple, when I press the E key, my character will be lauched on 1000 unit to the right. Same thing with the Q key, but on the left
ur a boss, thanks alot, idk if u know the answer to my mouse problem but im having more trouble with that then the character launch.
Unfortunately I didn’t play yet with mouse, sorry
Good luck