The Troops Legacy (Writing)

[Maxpphire]

So, you're tring to say make the laugh scene more detailed, so that
they understand, without the hehehehe part?

Yes, you don't have to use sound effects but you should describe what the noise is making.

Plus Hehehehehehehehe is not an evil laugh at all, nor is it even close to it. There is a typed sound effect that comic artists use for an evil laugh, but this isn't a comic and you shouldn't be using such sound effects.