Hey! We're glad that you're enjoying the game. We would really appreciate it if you rated it! :D
The game modes you suggested sound awesome! If we receive a lot of support for this game then we will certainly work on those modes! So, feel free to share this website with your friends :)
You can purchase guns by walking near a weapon and pressing "F." By shooting the undead you will earn points. You also earn points by saving citizens each night. So try to keep your citizens alive throughout the day/night!