:'( I'm stuck at crispsContest.js lvl
Additionally it doesn't support injection there, so while "player.removeItem('greenKey'); player.additem('greenKey');" should work, it says "TypeError: undefined is not a function".
player.removeItem('greenKey'); return 0;} if(1==1){('');
Full link: https://gist.github.com/anonymous/c78b439d8f2369e03f68
Basically, this let's you delete the green item once. After that, it makes sure that return true is never reached (because of the 1==1), so next passages through green are allowed. Kinda liked the sneaky (''); myself :P