Alright javeryh, step into my office and I'll guide you towards the path of Infiltrator enlightenment.
First off, let's talk about your Infiltrator build. Ideally, there's two different directions you can take the Infiltrator class - Sniper/Controller and CQC (Close-Quarter Combatant). I've really only put a good amount of time into the Sniper/Controller class, because the CQC variant just feels fundamentally wrong to me (I'll explain why in the weapon part of this post).
For a Sniper/Controller set up, your priorities should be: maxing out
Operative (specialize in Assassin for greater damage output, Agent for longer Tactical Cloaks), maxing out
Tactical Cloak (Assassination Cloak for greater damage output, Enhanced Cloak for longer Tactical Cloaks), maxing out
Incinerate (go for Incineration Blast, as you can't upgrade its radius from research), getting
Disruptor Ammo up to
at least level 3 (for the enemy weapon overheating bonuses), and dumping the rest of your points into
Cryo Ammo and whatever bonus ability you currently have. Under normal conditions, I'd suggest a bonus ability and give it priority over Cryo Ammo, but you don't yet have access to the main bonus abilities that the Infiltrator class benefits from.
For a CQC Infiltrator class, the same priorities apply except that you'll want to stick with the
Agent specialization (for Operative) and
Enhanced Cloak specialization (for Tactical Cloak), as you'll start to depend on that extra time to either move in for the kill or run away if you get in trouble.
As a recap, here's the typical Sniper/Controller build vs. the CQC Infiltrator build:
[Sniper/Controller]
Disruptor Ammo - 4 (Squad)
Cryo Ammo - 4 (Squad)
Tactical Cloak - 4 (Assassination Cloak)
Incinerate - 4 (Incineration Blast)
AI Hacking - 1
Operative - 4 (Assassin)
[CQC]
Disruptor Ammo - 4 (Squad)
Cryo Ammo - 4 (Squad)
Tactical Cloak - 4 (Enhanced Cloak)
Incinerate - 4 (Incineration Blast)
AI Hacking - 1
Operative - 4 (Agent)
I know number-wise they look rather similar but, in terms of what weapons they use and general gameplay tactics, they couldn't be more different.
When it comes down to weaponry, the Sniper/Controller build is the only variant that makes sense to me. The only bonuses you'll be gaining for the shotgun with a maxed Infiltrator is +9% damage...that's it. With the sniper, you'll gain that +9% damage as well as sniper time slowdown and sniper time duration. Obtaining the M-98 Widow should be an Infiltrator's #1 priority, in terms of weaponry. On the Normal difficulty, you should absolutely annihilate any enemy you come across.
Regarding general gameplay tips, there's a number of things you want to keep in mind for either variant of the Infiltrator. For the Sniper/Controller class, you need to live by the 4 F's (coined by someone else on the BioWare boards): Find them, "fix" them, flank them, and finish them. Simply put, you need to find your enemies (pause-and-play strategy; look around the battlefield and determine where all the enemies are), "fix" them to a certain location (using the sniper and your squadmates to pin them behind cover, clump them all preferably in one general area), use the Tactical Cloak to flank them and set up shots (starting with the strongest/most-armored enemy), and finish them off. Also, keep in mind that you want your cooldown meter open at all times (or you won't be able to use Tactical Cloak), so use Incinerate sparingly - mostly if you see 2+ enemies side-by-side. If you get caught in a close quarters fight, switch to the SMG (hopefully you have the M-12 Locust from Kasumi's DLC mission).
The main idea with the CQC Infiltrator is to take out heavily armored enemies from afar with the sniper, and then switch to the shotgun as you aggressively push forward to finish off the other enemies in the area. This build is heavily dependent on your ability to maneuver the battlefield from cover to cover while you're taking out enemies up close. This build requires a lot of experience and familiarity with the game to be super effective.
As far as squadmates go, Miranda is your best friend on any/all missions. I'd suggest having her alongside you at all times. The third slot is dependent on the mission - more specifically, the enemies you'll be fighting in each mission. For synthetic enemies, you may want Garrus or Kasumi with you (for the extra Overload). For organic enemies, Mordin, Jack, and Samara (who you may only have the dossier for, at the moment) are all good options. Against Collectors, I prefer Kasumi because of her Flashbang Grenade's ability to stun enemy (read: Harbinger-controlled enemy) weapons. Grunt's usually a solid choice for a 3rd just about any time, as he gets a lot of attention (allowing you to flank) and rarely does anyone slip past him to get to you.
You should be set, for now. If you need video tips, I suppose that I can dig a couple of them up for you.
All of that to say: Infiltrators suck. Vanguard or bust. (right, Kado?)
[quote name='erehwon']Have any of you guys bought the ME2 soundtrack? I'm tempted, but I'm really hoping for a CD version that would include all the DLC as well.[/QUOTE]All of them.