Here is a guide on how to get all achievements in Flesh Eaters.
This is a translated version of a Russian guide. You can find the original guide clicking here.
Greetings!
Cure

We bring the medic to the computer and wait until he finishes searching the blood samples(costs 5 antibiotics each time).
Truth

There is a radioactive container In the chemical plant, click it with an engineer.
Escape

You can escape by repairing the car and finding 2 map pieces. You must have an engineer on your team to repair the car.
Hunter I

Simple as it says, just kill 100 zombies.
Hunter II

A little bit harder, you must kill 1000 zombies for this one.
Hunter III

It may take a while, but eventually, you will get there. For this one, you must kill 10000 zombies.
OverKill

Kill yourself with a RPG.
Noob

A very easy achievement, but not very easy to find. Just let a zombie kill your entire team on tutorial and the achievement is yours.
Salvation

Find the vaccine and radioactive waste (“Truth” and “Cure”) and get out of the city (“Escape”).