Originally posted by Onehungrywater
I didnt notice any of these yet, so I decided to post.
I know these are all old and some of you might know them all, but for those of you who dont...well here yah go 
Infinite Weapon Glitch - For this glitch you need two people. Have one man down himself at the edge of the random box. Go towards the other side of the box and buy a random weapon. Before your weapon pops up start reviving your partner. Once the notice pops up telling you to take your weapon, quickly release the Square (PS3) or X (Xbox) button and press it again. Once your partner is revived you will have both your previous weapons and your new weapon 
Dog invincibility barrier - Open the door back by the power that leads into the building with the cat walk. Go into the room with quick revive and fall down the hole. once downstairs go to the side closest to the hole in the wall and get into the corner. Then jump and crouch. Once you do this another person can stand on top of you (on the wooden boards) and can also be protected from dogs (This glitch also works as a zombie barrier if you do it with two people like this). And please note this glitch only protects each person from one dog at a time.
Never lose a gun when you pack-a-punch - After you have done the infinite weapon glitch, if you want to PaP you must do it this way. First of all you will need to buy bouncing betties. Once you have your betties run to the PaP and put your gun in. Once your gun comes out, pull out a bouncing betty, and hold Square or X before your bouncing betty is out. This will give you your PaP'd gun without making you lose another. (Let me know if this one is too confusing I will post a video I made of it)
Outside of the map without hacks (CONFIRMED UNPATCHED) - Have two people get inside the PaP machine in the right corner (Right corner if you are outside the machine) Have one player get inside the other in the corner ( Lay down and have them jump on your back, then stand up) Once you are inside each other, bring a slow crawler towards the two player. Once the crawler get close enough it will levitate (The levitation is extremely noticeable btw) Once the crawler is levitating one player needs to run outside the pack-a-punch and the other needs to start jumping. Once you get hit you will fly above the PaP machine , keep jumping and once again you will fly out when the crawler hits you taking you out of the map.
Another infinite gun glitch (max of three Guns) - I put this one last because I have only done it once and am not 100% sure how to do it, so if anyone knows how please let me know if i am wrong. Ok first put a gun in the pack a punch. Then while it is getting Pack a punched run over and buy a Kar-98. Run back and do the betty glitch mentioned above (pull out betties take the gun) And if all is correct you should have three weapons.
Thanks for reading everyone, this thread took alot of typing and it is all my original wording. Rep+ and thanks are always Appreciated
you can get out the map on the last 2 maps still and best way for der rise liek u say down your self at box get all guns and upgrade tthem all in pap

by getting your betty out when you go to get the gun out the pap

simple lol add me colindcb show u how to get on shi a numa and der risebut not good at that one but no how it done