I added some pick-ups for the grenades. Also grenades explode other grenades within range instead of pushing them away and they can trigger an explosion for any ‘Explosive’ item within range.
I played a bit with character skin, trying out some solutions.
I also hooked up a grenade amount display and added Unity’s new post-processing stack to see what it entails. It’s easier and faster to setup than having to place the effects yourself and it allows the creation of profiles, which means it’s easier to carry to other projects.