Good tactic 4 nazi zombies der reise?

hi ppl thought id put this solo game tactic up 4 all u zombie hunters out there. 1st round-shoot zombies with pistol 4 times then knife. 2nd round-shoot zombies 6 times then knife. 3rd round- open the door on the right and head shot the zombies with the kar till u can open the next door then buy the thompson.4 round-open the stairs ASAP then hang around the box till u have 2500pts. run round and grab juggernog when u have them.stay around the box till after the doggies(u prob will have 2 buy ammo 4 thompson during the next 2 rounds. ok u shoud b on round 6 with around 6000pts buy speedy cola and have a few goes on the box.on round 7 leave a crawler at end of the round and go open and use all the teleporters 2 unlock pack a punch.now go camp up the stairs were the bowie knife is.on round 8 u should make enough 2 use pack a punch so remember leave a crawler(just throw grenades out the window 2 your left) upgrade your weapon of choice then go back 2 the stairs.round 9 do the same i.e make lots o points and leave a crawler. now upgrade your other weapon. now u have the 2 best perks and both guns upgraded all by level 10!!! i got 2 level 26 on solo using this tactic ppl (i ran out of effin ammo gggggrrrr)so try it out n let me know if u got any good tactics. good luck!!!