Walking Dead Zombie Apocalypse Game

 Dam it I was happy blowing away a load of zombie's to my hearts content done quite a few level's to then they cheated and brought up a Tank,i would have done it to but I have not fathomed out how to change weapons and I had a rocket launcher loaded waiting and I could not fire it dam blast and Bugger it,im not playing any more cheats they are  

  read the instructions or maybe someone else can fathom it out 

 I would read the instructions if I could find them I think the zombies  have hidden them some were  Hello  I think I knew that zombie I think I went school with him  never did like the git  come here my lovely and get a taste of lead I know you like it

It's a swizz. And i run out of ammo blasting hell of the first zombie

On one of the levels I got in the car and run the buggas over 

I like your avatar Tigger 

Go up in the tower there is a machine gun with a thousand rounds in it and you can blast 10 bells out of them, and jump in the car and for a time run the big buggers down if you use the shot gun let them get dead close and don't go blasting them use a couple shots at a time to conserve ammo, when you see the bins stand over  them until you see an x and press x key pad wait until fresh ammo is down loaded to you, when you get to the level were a zombie is in a powered lawn mower car jump over him and blast him, the level on from there they cheat they got a Tank and I can not fathom out how to use the antti tank gun or change weapons cant find the instructions on how to   enjoy