ah.......you are right...thanks

@PuppetMaster the solution for this time :
"Wait to get a second infection shot. Infect a human. After killing the zombie, one of the humans will walk to the right. Infect it while it is on the button. Victory..."

is not possible....... even a runner couldnt make it in 1:07 (there is the sentry too)

No cheats involved... for sure

how the faq..........cheats?

Hmm. I think that I did not understand how to play that map...