If you hate the guards at the start you will hate the guards near the end you will meet guards with shields and bullet proof suits and the monsters get guns and rocket lunchers but the rocket lunchers are slow so you can see the them for a long time before they hit you good luck and kill those thing with a p-50
Fat Boys are the toughest enemys in the games to kill. Luckily for you, there is an easy way to mince them. So here it is.
Hide behind a wall or something without letting him see you, then, slowly edge your way round the side of the wall so that his arm just comes into view, so long as he hasn't spotted you he will just be standing there. Now, with most of the other enemies in the game if you shoot them, they'll either run away or run for you. The Fat Boys don't, they just stand there alowing you to just keep shooting them in the arm until they die. This tip is especially usefull on the last level - Volcano.