How do you beat level 28 in plazma burst 2

Easy! Walk forward and stay next to the elevator then shot (with the gun in slot 8) to the left of the screen (enemies will dead so much now!). Then go up the elevator to shot 2 enemies left (turn on the left button or the right button to enabled the enemies). Kill them and if u alive after that, u will have the gun in slot 7(take from dead enemies). Go down elevator (by press E at the middle button) and then u go forward and shoty those enemies on the top/left of u and use the sword to climb up and shot all enemies left. Use the gun in slot 5 (rocket) to up [little hard but keep trying]. Then go to the right and jump up three time (like jump up in level 2) and... finish![sorry about the bad english, hope u understad it]