Pehesse RRH animations are rigged 3d models transposed into 2d spritesheet and slightly refined there. I'm very lousy animator, though. Apart from the obvious run, jump, crouch, idle etc. cycles I also add some special movements, depending on the chapter they are used in, so nothing fancy...
1 Gb RAM usage is slowly stopping to be an issue, although I try to keep it somewhere around 512 Mb.
I see! Well, as long as it works and it has style (which I think it definitely does), it oughta be good enough
I'm wondering how I'll handle my next project with C2, with that 1Gb memory use "limit" (though actually not really, it's only a warning as far as I'm aware), seeing how I plan to push animations further... maybe I'll contact Scirra to ask for the possibility to toggle off the warning message :v