Note: This is a TSW-based write up and may need to be edited once SWL goes into Open Beta.
By 'mortal', I mean a baseline, unaltered, non-magical human. Of course, there are other 'mortal' creatures -- any creature that ages, dies, and stays dead. Werewolves are mortal. Demons are, presumably, mortal. Some of this might be applicable to those, too, but this is focused on Ye Olde Standard Humans.
So You Want To Play a Mortal...
Playing a mortal in The Secret World is both interesting and challenging. Back "in the day" (when I joined TSW Vanilla in 2013), I was one of only two mortal characters that I was aware of. Nowadays we're not such a rare breed. I'd like to think that's in part because the pioneers of playing mortals did a good job at showing that playing a "normal human" within a world of superheroes can be engaging, interesting, and rewarding.
I've had several people ask me for advice for playing a mortal or non-magical character, and so.... I thought I'd write something up. So here you go. Spellsmith's tips on playing a mortal.
Warning: Spoilers Ahead!