>>1979512Do not be discouraged from playing it quickly! It's a very hard game indeed, but you don't have to go through whole mission again if you go back to the game after a while. To illustrate that to you I will show my way of playing the game:
Once in a time, usually once a day or few, I will open the game and reload my last save. I will then try to come up with a way to go a bit further in the mission unnoticed (I always want to get unnoticed until very end of the mission, I think that's the best way of playing the game, you may found yourself playing differently though and that's okay too). If I am able to do anything I will save (preferably in new save slot, so that I won't mess up my progress). If I am not then after a while I just exit the game to come back later. I am really a mediocre player, I am only on mission 11 right now and I do need a lot of save states and time to beat most of missions, I am cool with that though, as beating every one of them feels so good. Try the game, you won't regret it