The hud becomes really small if playing on 4K or even 1440p, Anyone know about any fix or mod to upscale the hud ?
According to pcgamingwiki dgVoodoo 2 needs to be used to upscale hud but it does not work

I'd like to ask the same question cause I didn't see anything about HUD scaling on PCgamingwiki. Are there any unofficial patches that fix this issue?

If anyone reading this I finally found a very good fix for the Hud issue. Its called "Peixoto's patch". There is not actually a patch for this game but the patch it self comes with a tool which is very similar to dgVoodoo 2 but this tool works with open GL games. All you need to do is add the game and set forced resolution trough the tool. Set in game resolution to lets say 720P and your dextop resolution to 4K. Wala now the hud is rendered at 720P but rest of the game at 4K.

Unofficial patch for the game also makes it look really good.