I know it may sound ridiculous, but as the last step in my effort, I've simplistically sketched what I can remember of the game's opening map.Out-there suggestion: Dark Messiah of Might & Magic?
1- Village where you start, make negotiations (sell and buy) and also where there is a woman who regenerates your HP.
2- In the north of this map there is something similar to a vineyard.
3- A huge iron gate that separates the game’s phases.
4- The path that leads to this gate has some pipes releasing steam.
5- Path that leads to another gate which is Phase II of the game.
6- Location of Phase I of the game, where the player can walk and explore freely and which contains many enemies to be faced.
Edit: drawings have never been my strong point. I hope this doesn't offend you.