Don't want to clutter the thread, but serious thanks to everyone who appreciated/commented the pic! I wouldn't do a whole comic in that style, but a game... Well, just keep an eye out, is all I'm sayin' :v
That's the best thing I know of that can happen to a piece of fanart, so I'm very glad you did :-D Thanks much!
..Back to discussing the game, now :-D
Transmute away! I used most of them as hands, since they cost the least, but towards the end, since I had hundreds of giblets to spare, I did some wings and kidneys to buy early most of the rage upgrades. If you haven't, there are quite a few easily accessible stores of supplies in every area you clear, if you take the time to return with your newly found powers, usually near the start - if you take the time to regularly go back, I assume it'd be possible to max out everything even during the early parts of the Citadel (assuming you sever limbs in battle regularly as well). I only found those supplies when I went back to explore before the final boss, by which time they were rather useless, don't let that happen to you!