i really doubt it will succeed to maintain the same dark atmosphere the original had.
Well I don't know if I found it to be dark, but that's because I accept game mechanics as trumping "official" fluff.
Officially, you are trying to take over the world from all those rival corporations who stole the valuable CHIP program.
In reality, the rival corporations are remarkably passive. They don't attack. They just sit there, all of them, just waiting to be conquered by EuroCorp. Maybe it's the masses...if you raise taxes high, you could get an uprising that you then have to crush, but that's fine because you can then make more money crushing those rebellions in relatively easy territories. So if you can manipulate the people to rebel, they can't be the enemy.
What about your boss? If you lose all your Agents, he blows up your blimp and kills you. That makes things scary, kinda...sorta? But since you have no time limit, you can just hang back with the territories you already conquer to raise more money, load all your agents to bear with the most advanced technologies, start and then crush a few rebellions, and then slowly expand---the game can be hard, but it could not be grimdark, can never be grimdark, because there is nothing dark about eventual victory against no real foe to speak of. The game is just a series of missions strung together justified by corporate greed, with the territorial map just being a sideshow at best.