Examples of scripts that don’t use load animation are fe scripts/explot scripts and i want to make a fe script but i don’t know how to make animations that use their own animation system.
What I am guessing is that the animations in the video shown are actually CFrame adjustments (similar to how camera bobbing works) paired with RunService and UserInput commands.
With that being said, you could probably create animations by manipulating the CFrame of a character’s part(s) when an input is received such as MouseButton1Click or a keycode. For the idle animation, utilize the Heartbeat event which will run every frame.