First of all I have to say that I absolutely love this game. I am level 23 and I usually log in every other day in order to complete missions. I have some reccomendations in order to improve the game.
As I've played for quite a bit (and I still LOVE the game) I am getting a bit tired of the missions - as there are not that many of them they tend to repeat quite often. For example last two days I got "kill 5 props" and I really would like some alternation. Some mission ideas:
* Earn 50 points. (It can also be divided between hunters and props, for example "Earn 30 points as a prop (from survival awards)" or "Earn 40 points as a killer".
* Perform a doublekill
* Taunt for 3 minutes - it would make the game more interesting as the hunters have a higher chance of catching a prop. And it adds extra excitement.
* Why not add some location based missions as "Be caught in 5 different rooms" or "Kill a prop in 5 different rooms". There is also possibility to add some specific room, for example "kill a prop in a hallway"
* Some different kinds of challenges would be fun also. For example "Don't move for 2 minutes" can be quite a challenge and force players to think of better and better hiding places.
I hope my ideas help to make the game better! Oh, and I can't wait to have new worlds already, it would be fun to find new awesome hiding places. Keep up the good work!