Can someone tell me what a good strat is? I keep running out of ammo by round 11-13. Ive been buying the steakout and ak74u and going with those, but other than that I dont know any other way to comeplete the map.   

Im pretty stuck, every time I get a bit high I run out of ammo. Once I run out of ammo I need to buy guns/ammo off the wall, but then I cant buy the doors or perks. 

Could you buff the Maboy a bit? I run out of ammo with it very quickly and when I accidentally knife into the pap powerup and get it I usually restart.