Level 6: DO NOT MOVE as soon as you enter there are 3 mines in front of you, to your left, and to your right. What you have to do is use your gun to shoot the eye shaped switch over on the other side of the room. Once you shoot it it will turn on the conveyor belts on the floor taking the mines away from you. Once the are a safe distance away shoot them. One of them reveals a secret passage which at the end has the ice bullets (also not required but helpful). Level 7: This place has a shop so spend $ you have on level 2 bullets and level 1 armor. Now continue through the door into the main part of the level. Here you have to kill 30 enemies then enter the passage that reveals itself. At the end there is a door DO NOT DO THROUGH IT. The door handle is electrified and if you touch it you will die! Instead use your sword on the wall to the right of the door to reveal a small passage leading to another door. Go through this one.