Mass-effect – I cannot load a Mass Effect 3 save on PC. Says I am missing DLC

I haven't verified the work around, but I can confirm that on a PC with origin, if you have any kind of DLC linked to your account you must be connected to the internet long enough to load your save. If you are disconnected at any time prior to that you will not be able to load your save or do anything really except start a new game.

Short answer: No offline play with DLC.

There's a bunch of stuff that is pre-order or only came with the Collector's Edition:

• AT-12 Raider - Origin pre-order bonus
• M-55 Argus - Pre-order bonus for select retailers
• N7 Warfare Gear - Pre-order bonus for select retailers
• Robotic Dog - Collector's edition
• Squad Outfit pack - Collector's edition
• N7 Weapons pack - Collector's edition
• N7 Hoodie - Collector's edition

These are all single player items. The Collector's edition and pre-order bonuses are currently unavailable outside of pre-ordering the game or buying the collector's edition.  No news on whether or not those of us with the "regular edition" will be able to buy them at a later date.

There's a couple of single player items that you can get for free by playing the Kingdoms of Amalur demo:

• Chakram Launcher
• Reckoner Knight Armor

There's a Battlefield 3 Pack (a set of multiplayer items) that you can only get by having Battlefield 3 activated to the same account as Mass Effect 3.

There's also the "From Dust" DLC (a single player mission + a new squadmate) which came with the deluxe/collectors editions but is available to anyone (from day 1) for around $10.

In addition to these items, there's a number of Razer ME3-branded items that come with special codes/unlocks for multiplayer.

On top of these, there's a whole set of Mass Effect 3 toys that you can buy, and each one comes with a similar code for multiplayer to the Razer items.

One tally of all the DLC for Mass Effect 3 listed the grand total at $870! However, the codes that come with the Razer gear and the toys are more along the lines of the "booster packs" you can buy in the multiplayer in-game shop, so I wouldn't consider them anywhere approaching essential.