Having a Gas

This achievement is earned by killing a thousand gas zombies. Keeping track can be hard, as your counter doesn't differentiate between gas and normal zombies.

= Suggested Strategy =


 * Unlock the bike key during Meet_the_Contestants


 * After the failure of the Military response and the rescue of Rebecca_Chang you have some time during Case_7-2:_The_Only_Lead.


 * Head out of the Safehouse and through the Royal Flush.


 * Turn left to the Slot Ranch and head past the stage into the cashiers den


 * Grab the motorcycle magazine (on the desk at the back of the break room)


 * Head out to the silver strip


 * Run down to the stage, and quickly climb up on top.


 * Facing the stage, climb up the left speaker stack, then up onto the scaffolding.


 * Pick up the chainsaw. This is the closest chainsaw to the bike trailer.


 * Climb down carefully, remembering to pick up the chainsaw if your drop it.


 * Climb off the stage in the opposite side you jumped up on.


 * Run diagonally across the road in the direction of the Yucatan, and run up the ramp to the bike trailer.


 * Modify the bike with the chainsaw, and jump on.


 * Drive out slowly, and turn left. Drive past the Yucatan entrance, then the scaffolding, and then left again and down the open entrance into the underground.


 * Do lots of laps, killing zombies.

There will never be more gas zombies, so cut them down. By the time your bike explodes, you should have enough time to open the lab, kill everyone then get the laptop and head back. You should also have your 1000 gas zombies.