I played some more missions. I passed a class in Shop and Photography. I also finished (I think) two missions. I got stuck on a mission where I had to destroy something. I had no idea how to, and the nerds finally killed me.
Most trophies in one day: 30 June 2012 : 26 trophies
29 June 2012 : 26 trophies
19 June 2012 : 19 trophies