I've been buying and playing through the Mass Effect 2 DLC recently, as well as playing through the game on the Insanity difficulty using classes I hadn't used much before. First, I'll post my class overview opinions, which I reworked from my PVC1 post. I've concluded that the Infiltrator class is definitely the best in the game, followed by the Adept. I have the Hardcore and Insanity difficulties in mind with my opinions and recommendations. My class tiers: Elite: Infiltrator- Very few weaknesses. Instantly headshot kill things before they even know you are there. Offensive punch of cloaked Widow headshots is godly; cloak both adds massive damage boost and provides a fantastic method to escape danger. Has a terrific combination of some of the best abilities: Incinerate, Disruptor/Cryo Ammo, Cloak, and AI Hacking (I use 1 point for distraction purposes) standard! Just add Reave (I choose Heavy Reave for my character) or AP/Warp Ammo and you have the god class. Adept- Singularity is an elite power. Little need to worry about limitations of ammo (i.e., endless attacks available). Singularity combines for incredible AoE distruction with Warp in particular, plus Singularity provides a great method of escape. Singularity sometimes slowly drains defenses such as shields while slowing down enemies with brief stun animations when protected by defenses. Can easily curve attacks around to blast even enemies trying to hide behind cover. No weapon or power can obliterate Husks like Singularity; it's unreal. Need to include party members with biotics to take full advantage of Singularity and other powers (such as Thane, Miranda, or Samara w/ Pull). Warp Ammo is a good choice, which gets bonus with enemies caught in Singularity. A bit squishy defensively, but it's less of a problem than you might think initially because of the ranged biotic powers available to you; just take care not to get rushed and use Singularity and beat feet if you do. Solid: Sentinel- Tech Armor is fantastic and lasts until destroyed rather than time limited. Good at breaking down defenses. Very flexible class; perhaps even more so than the Infiltrator class. A bit weak offensively until Advanced Weapons training, when you should probably add Assault Rifles. Good class, and better than good if you pick the right squad members that compliment the Sentinel's abilities. An excellent class for beginners, as it's hard to screw up in terms of upgrading the class or party members. Pretty decent mix of powers and abilities. Soldier- May initially seem like an elite class with Revenant LMG, but ever run out of ammo and you are toast. Not much available other than shooting. Rather boring to use. Easy to learn and use if you prefer simple shooters over RPGs. Adrenaline Rush is a very handy ability offensively or defensively depending on the situation. Can use all weapons, including the Revenant and Widow. Durable. Party Dependent: Engineer- Fun to use tactically, but always feels limited offensively to me, which is not ideal on time-sensitive battles. Organic/Biotic enemies can be a problem (this happens to include some of your most dangerous enemies unfortunately), requiring you to depend more on your squad. I'd recommend adding AP Ammo and Assault rifles; upgrade Incinerate, Overload, and AP Ammo (if you took my advice and added it) as soon as possible. Very capable against synthetic enemies, especially with AI Hacking. Drone spawns are extremely fast, making class master at distracting foes. An Armitage favorite, who will probably disagree with me for placing the Engineer so low. Vanguard- Easily the most difficult class to use in my view. Your bread and butter offense is Biotic Charge followed up by shotgun headshots, which I will admit does more damage than you'd think. Close range combat isn't that easy on the Insanity difficulty, so be prepared to die often. Other biotic powers kinda suck, especially Shockwave. Definitely have your squad try to take out shields and other defenses as quickly as possible. Adding a defensive power like Fortification can be a good idea, but then you have issues with competition with cooldowns of your Biotic Charge, which is constantly needed to get into shotgun range and for the brief shield boost it gives you. Make sure you pick a good squad because you'll probably need to lean on them often. Terrible at long range. You may want to have Garrus in your party, who is good at breaking shields and can provide you with Squad AP Ammo. Not very good against synthetic enemies. High risk/ mediocre reward. Can use all shotguns, including the Krogan shotgun, the Claymore. I've also been buying and playing through the DLC packs recently. I'll give a brief overview of some of the DLC I've played recently avoiding spoilers as much as possible. Firewalker Pack: I had this available to me for free all along somewhere in the Bioware website and it's crappy Bioware points interface but didn't realize this until I started buying DLC. Regardless, this DLC is mostly vehicle based and was a bit disappointing. You have a few missions to run through, and the controls are slightly wonky. It's OK. Shadow Broker: By far the best Mass Effect 2 DLC I've tried. Definitely buy this. I'd say it's about 2 to 4 times longer than a recruitment or loyalty mission. The Infiltrator is custom made for the final fight; that part was too easy with that class. There are some nice battles, and the environment in which it takes place looks awesome. The story is really good, but I'm not going to include any spoilers about it. It's well worth trying. You also get some nice features with this pack; one includes the much needed ability to re-spec party members. I have not yet tried Overload (downloading currently) or Kasumi yet. I'll update this later. I haven't purchased the Kasumi DLC yet.