As you may know by now there is a glitch to get infinite credits in Dead Space 2 already, but that one requires you to get near to the end of the game. But I, in my infinite wisdom, have managed to figure out a way to glitch credits right from the off...

 

You need one of the two DLC packs that give you a Detonator for this to work. Once you get to the first store, get your free Detonator (or two if you have both packs) and shoot out and deactivate all the mines,  then sell the empty gun or guns and buy them back and repeat. Depending on if you have only one or both guns, you can get 3 or 6 mines every time. Each mine sells for 200 credits so you do the math.

 

If you fill your inventory up with these you can get about 30k (15 slots from DLC x  2000 credits per stack of 10 mines). The first time you get to a bench, if you go to the next room in Chapter 2 you can open the Power Node door and get the schematic for the Power Node, and then go back and grind money to max out your stuff.  It took me about 30 minutes to get 30k credits, so if you wanted to max your stuff it would take a while, but I'm sure it would make Hardcore a lot easier.

 

Dead Space 2 is out now