You surely know how to add 'life' to your paintings. Looking at this one I feel as if I was the one hiding in the bushes, unfolding the branches in front of me to glance at this tower of fear... I like the perspective and these blurred 'sticks' in the lower right corner. You just forgot to paint my hand holding them so that I could have a better look The birds flying in the backgroung and leaves carried by the wind add much realism to the whole painting. If it wasn't for the skulls you added 'for decoration' of the tower, I would think that it's a painting of a real object and its surrounding.
I must point here one thing, this building doesn't match the surrounding at all. To be more precise, you are undecided about the mood of this painting. I believe that choosing one of the following two options could have improved this. You might have add some scary elements to the background or made the tower look more like a monument than like an object from a game. The painting looks good as a whole but as one goes deeper than just the surface, he realizes that you have combined realism with fiction instead of deciding whether the theme reffers to real life or fatasy.