How do I make a sword swing in a twin-stick shooter game?

Hey guys. I'm working on a twin stick project (like nuclear throne, enter the gungeon...), so the weapons rotate according to the mouse position. I'm trying to make the melee weapons swing when the player presses "shoot", like a sword, or make a spear go in the direction of the target and then back (like in the Brotato game). I'm trying to use tween, but I'm having some problems.

1. How do I make the sword swing attack to the right side and then back? I know I can use the pingPong tween effect, but how do I make the movement? It always stays at the angle of the mouse.

I literally have no idea where to start. Do you have any suggestions?

Some example related to sword swing:

dropbox.com/s/h0yj1w8v64103tb/saber_range.capx

https://www.dropbox.com/s/f6a6vchulevej8m/Clock%27O%20Gear.capx?dl=0

the saga continues... but I think it's worked out now

Now I'm trying to make the swing more "aggressive", I think it's about finding the right easing

if anyone wants to see...

This is a very nice example. It helps a lot. This movement is harder to create than I thought ><

Many thanks.

I have an easier solution for you if ur willing to change the look of how the sword animates. Treat ur sword as if its a gun. The difference? the sword has unlimited ammo, its bullets are slashes and the bullets have a very short range and slower speed. that way the gun and melle logic remains roughly the same

Yes, currently melee weapons work like this in my project, but I'm trying to make the weapons have more 'juice' movement... it's hard, maybe I can do it =S