refactoring:

add expansion pack entities
rename all functions to be lower_underscore

core features:

distributed ammo
lives counting

useful features:

configurable enemy stats
indicators for where other players are
users can cancel map ends ("<name> initiated travel to <mapname>")

extraneous features:

emotes
player sound effect option
players shoot through eachother
selectable player models and skins
sound clips
third person player weapon models

done:

corpse pickups have keys
custom pronouns
no friendly fire