Aliens Colonial Marines
60 Achievements
1,250
35-40h
Secreted from What?
Kill 5 Spitters without being damaged by acid
20
How to unlock the Secreted from What? achievement in Aliens Colonial Marines - Definitive Guide
If you're attempting this in multiplayer, it must be in one match. It's not cumulative. This is really easy in a private 1 vs. 1 Team Deathmatch. Have your friend spawn as a spitter and quickly find each other so that you can kill him/her 5 times without taking any damage. If attempting this in campaign, mission 6 has a cave where these are. Use long range scopes to take out five. If you take damage just restart checkpoint.
Spitters are the smaller Xenomorphs that climb walls and spit acid at you. You can earn this trophy as soon as you encounter them for the first time. Simply hang back and use the Battle Rifle to pick them off from a distance to ensure that you don't get hurt by their acid. I can confirm that you do not need to kill five Spitters in a row without being hit, only a total of five whilst suffering no damage.