All about the points, more points for faster skill-ups get more headshots chain kills like 5 kills in a row or long shots and u will get lots of points fast.
O my God, this is my childhood game! I also remember playing on my father's computer, i didnt understand much, so i did all sorts of ridiculios things with his saving. As it is, I have now gone through all the campaigns on the "remade" version of this game (as a child, I stopped at the final battle of the second chapter). In general, there is no desire to do interesting fights or through some funny rules? By the type of "surround the enemy with walls and make sure that he runs out of resources". Good game!!!