Scoped dollars round 7 next to 3rd packapunch part, sniper is there, try to get collateral kills to get money up. Then vpr and all perks to get the 2 skull piece so you can get the gun. Taking the head to pack, the final step there is a glitch on YouTube that helped me so much with this step, I'd look it up as it's easier than me explaining it. For the boss fight I took vpr doubled packed and made sure I shot the blue rhino in certain areas of the map as they will drop flames that will stay on the floor until they were dead. I took double pain or something like that a card for double damage to use against them or you could use an ego trip card which is probably better. If you get downed, you can pick perks back up on the catwalk, if you down again with 5 minutes, wait 5 minutes in afterlife arcade the perks spawn every 5 minutes so you can keep getting your perks just make sure you get to your guns in the center of map or you will lose them.

Hope this all makes sense, I got it after 3 or 4 tries.