I will tell you how to get out of the level in small killing fields oon seal and terrorist teams. I will do seals first, because their sweet. Go over to the ladder on the right side of the spawn. Climb half way up and then back down. WITHOUT TOUCHING THE RIGHT ANALOG make your way toward the door in the back of the base. While strafing toward the door, press the TRIANGLE button to dive outside the level. It is the same exact method for the TERRORISTS. Do the same thing on the ladder, DONT TOUCH THE RIGHT ANALOG, and dive outside the level. (A HELPFULL HINT) Use an SR-25, SASR, M82, or M87. After you kill someone, move to a different spot, DONT STAY IN ONE PLACE or the other team will kill you and then they will glitch as well. Keep in mind that if you glich and you play against me I will kill you after your first kill. My specialty is killing glitchers. Look for me online I'm DEADEYE75 and I'm a silver bar Leutenant.
To do the sky walker glitch make sure you have an rpg or at4 out than go to a ledge that you can hang on climb up it when youve climbed it go near the edge that you climbd on, take out you rpg or at4 fall of the edge and press x a few times... till you climb with your rpg.
(press x when you hit the ground) then press up when your climbing with the rpg or at4 you should now being walking with your rpg/at4 go up some stairs of up a ledge.
If you try to go back down the stairs or ledge you will be flying this should work it works for me and my friends all the time also if you go up some more stairs or up ledges you can get higher this glitch may take you a few trys but it does work.also be careful because you can get stuck.