Easy "Beginner", "Survivor", and "Veteran" Achievements
Run around the map and only shoot zombies when they can hit you. This can be done with the pistol. The zombies will not get more health, as in Defense mode. Four shots with the pistol is enough to take one down. After a certain number of zombies appear, no more will spawn. When the zombies are following you in a large crowd all of them will want to travel in the same direction directly to you. This will allow you to simply kite them around the map. Take caution if there is one behind you. It will be better to shoot him when he gets in a dangerous position where it can hit you. It is better not to kill them; when a zombie is killed, another one will spawn somewhere on the map which also makes things dangerous. Kite them as long as needed to earn "Beginner", "Survivor", or "Veteran".
Easy "Kiting mastery" Achievement
Walk around in large circles around the lantern and try to maintain good accuracy. After four or five nights, you will have enough money for the Tesla. After five or six nights you will have enough money for the Laser. Purchase the one you prefer, but do not buy any other weapons in order to always have enough ammo from the crates that drop. If a zombie drops health that is needed, walk in a small circle and shoot your way through to pick it up.
Easy "One shot, many kills" Achievement
Create a set of long parallel wooden palisades either horizontally or vertically to force a number of zombies to line up. Kite them around to an angle at which you can hit at least eight of them with a single shot. Note: Zombies killed while off-screen will also qualify.
Walk around in circles to get a swarm of zombies, then fire a lucky shot into the middle of the crowd.
Various Steam Achievements
Achievement
How to unlock
Captain
Score 250,000 points.
Cheap and reliable
Kill 300 zombies with shotgun in a single game.
Colonel
Score 1,000,000 points.
Come get some
Build and equip four turrets.
Corporal
Score 30,000 points.
Demolition
Kill 8 zombies with a single rocket.
Efficient usage
Use no more than 6 clips during the first night.
Kiting mastery
Survive 10 nights without any barricades or turrets.