One of the first things we are going to look at is the common FPS staple: explosive barrels. These will allow the player to get a "leg up" on their enemies by causing explosions when damaged enough. They're also fairly simple to create.
Chapter 5_5_ HealthPacksPickups.unityin the example files you can get from the Packt Publishing website).
Let's get the implementation of the functionality to work correctly, then we can make it look nice.