Thanks to all of the feedback, here's a list of features that will be improved in the next big update:

1. Resize the UI
2. Tutorial
3. Change the 'sprint' key and speed of the player rather than toggling the run and weapon at the same time.
4. key bindings options
5. mouse sensitivity options
6. more purchase-able content
7. Hotkeys for Medkits and Bait
8. Close range meelee attack?