This is a little experiment I worked on last night to test around with Unity's Animator and particle system. I think the particles came out well. They took a lot of me playing around and tweaking things and the animations were certainly fun. I enjoyed the little recoil ad squashing/stretching barrel.
Model: Original/
Animations: Original
Particles: Edited prefabs from the asset store :
https://assetstore.unity.com/packages/vfx/particles/simple-fx-cartoon-particles-67834