It is getting to that time of year, so I am starting the obligatory challenges thread, post them if you have them, and any good greentexts too.
S.T.A.L.K.E.R. Challenge details:
https://docs.google.com/document/d/1284nyxfctWXhRAFPESuzFZLdJFbU7XtIwV6gc0ysOfY/mobilebasic?pli=1#heading=h.y6l22tvvcxyu