Yet Another Zombie Defense HD

Start up Endless mode; you have to get kinda lucky and get them to drop a laser pickup.
Once you have the laser, run to the bottom left corner without killing anymore zombies. Once in the corner let the zombies pile up and when you think there are enough; kinda spray the laser once across several rows to weaken them but NOT to kill them. Use a second shot to get enough kills.

Credits > https://www.trueachievements.com/a253640/precise-cut-achievement

Select deathmatch, and play a local match. The match is 5 minutes long, and the achievement will pop after.

Easier with friends. Make sure to buy better weapons. SMG is good for early, and Sniper is really good for later. Should make surviving 10 nights fairly easy.

The achievement is earned upon dying on the first night.