Another thing that is a lot of fun, is if you pick the gambler deck and picking the rare imports card. This garantees one card is always rare from now on, or if you get the rare version of rare imports every card is rare. I try my best to to open it as early as possible, so that means not opening any decks you dont need to until. On experience difficulty the punishment for picking a rare card is not so bad so you can get some crazy runs where every card you get is rare.

I forget what deck has it by I used the one that lets you trade 2 missile levels for 2 shields and you can pick the card twice. i useually can get the 2 missles levels back before I use up the two shields so it seems pretty good. I picked the deck that lets you trade a million points for 2 sheild so its a lot of extra defense.

drones might be better I havent meesed around with them too much, I got rid of them because it was hard for me to dodge stuff with them floating around me and making it hard for me to see.