3d skew

Hello!
What do i need to skew a 3d object as if it’s 2d?As i see it i can play with scales but this would crunch it from just that angle. What i need is to look 2d even if i rotate it and retain that perspective. Like if it’s projected on flat surface. Any ideas? I would play with Unity but figure out someone might have a solution.

 

What if you render the object to a render texture and apply that to a pre-skewed quad (simple, 4-vertex)? Then you'd actually be skewing it in 2D.

 

It looks like just what i need. I’d try that. What i am trying to achieve eventually is using of 3d game assets as if they are 2d and just use pixel shader onto them. It’s something diablo 2 was using back in the days. Devs figured out that machines wont run it if it’s pure 3d, so the just made 3d assets and did made sprite sheets out of them. I just want to take one more step and pixelate everything. Might work. And also particle sfx would work that way, plus you can have pixel art game with 3d perspective if i imagine it right. Thank you for the suggestion!