--- /dev/null
+Enemies
+=======
+
+* Enemy roaches (red)
+* Rat
+* Human
+
+Vehicles
+========
+
+* Walking
+* Roomba
+* Quadcopter
+* Robot
+
+Weapons
+=======
+
+* Spit
+* Butter knife
+* Crowbar
+* Gun
+
+Only one weapon can be equipped at a time.
+Smart is used for the ranged weapons (spit and gun).
+Strong is used for the melee weapons (knife and crowbar).
+Damage depends on the total number of roaches with the appropriate attribute
+in the vehicle.
+
+Serums
+======
+
+* Smart -- operating important things.
+* Strong -- pushing stuff around and opening doors.
+* Fast -- speed.