Here’s a list of the guides I’ve written for Infiltrators. Some are becoming dated (such as the comprehensive Infiltrator TR weapons guide). I will be periodically updating these as the weapons and metagame evolves.
Part 1: https://aninfiltratorsblog.wordpress.com/2013/04/30/the-wraith-part-1/
Part 2: https://aninfiltratorsblog.wordpress.com/2013/05/03/the-wraith-part-2/
TR Infiltrator Primary Weapons:
TR Pistol Guide (pdf):
Infiltrator cert spending guide: