The writing can be a little hack, but clearly the animators put a lot of work in. The whole creepy art-deco design of Gotham is really good. Plus there’s lot of cool effects, like Two-Face’s other face being shown in lighting.
I’ve been giving it a re-watch and have been surprised at how good it is.
The intro is an all-timer for me, it pushes all my nostalgia buttons. I used to watch that show religiously as a kid, it was by far my favorite