I keep seeing bodyvelocity get used but it deletes any other velocities on the player. Whats a body mover that does NOT delete other velocities but still has an apparent effect on the player?
Also, when an attack makes a player do an airstrike or lunge forward what should i use for that?
It all depends on what type of motion you want to achieve. For most people, simply using ApplyImpulse is enough for the examples you listed. However, I prefer using LinearVelocity along with other forces like AlignPosition and AlignOrientation to fine tune my movement.
You can read more on Mover Constraints here: Mover Constraints | Documentation - Roblox Creator Hub