To start have at least 3 people.
ok when the game starts make sure every one has at least 1000 points and then go through the teleporter.
Then play through round one but leave 1 zombie(dont try to make a crawler it will die)
Then use everybodys points through tunnel 6 efficiently and turn on power.
after the power is turned on do samantha says and if you have enough points do the hacker part.
Now tunnel six usually should be excavated before round 6 so play till then and get box as frequently as possible.
Now by round six someone should have either raygun, wavegun, the special new gernade, or gersh, whoever this is they are going to do the pyrimad glitch and the others will saty behind the pyrimad untill the zombies are all gathered up by the glitch person.
keep doing this glitch untill the four tubes come out.
By now people should have gersh everynow and again through a gersh by one of the tubes so it can collect souls. keep doing this and you will have it.
i will be helping anybody who DOES NOT have this acheivment tommaro and any other day after that. Just send a message to Courior_6 and i will help asap.