A lot of people recommend the various defensive powers but I feel that as long as you use cover effectively, extra damage is a lot more valuable than extra survivability. Squad Armor Piercing Ammo and Squad Warp Ammo are both good choices. Legion, Garrus, and Mordin can also be valuable in certain circumstances, but when in doubt, Zaeed, Grunt, and Thane are your go-to guys for the third squad member.īonus power: I personally feel that ammo powers are the way to go since the others tend to be quite situational. Other generally good choices are Grunt for his very high survivability and Squad Incendiary Ammo for missions with vorcha or krogan enemies, and Zaeed for his Squad Disruptor Ammo, sniper rifle skill, and very high damage output. This makes Thane a good choice, especially on missions with Collectors. Biotic squadmates are generally not very helpful since practically every single enemy will have shielding, armor, or both- with the exception of biotics with the Warp ability. In general, teammates with sniper rifles are very valuable and teammates with shotguns will just rush the enemies and get themselves killed (Grunt is an exception because of his exceptionally high health). The other squadmate is somewhat situational.

With Warp, Overload, 15% squad weapon damage bonus, and decent survivability, no one else touches her. Squadmates: Miranda is mandatory for every mission. There's a lot of advice here already, and much of it comes down to what personally works for you and your playstyle, but I'll share a few things that helped me with an Engineer Insanity playthrough.

Mass effect 2 ammo powers