What kind of issue are you running into? Both sprite sheets and gifs are included for all animations, and that should be more than enough to properly implement them.
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I'm planning on releasing 5 more packs, each featuring a new tileset + enemies. All of which of the same graphical style. If I end up adding any basic, universal assets to later packs (new animations for the main character, new collectible pick-ups, etc), I'll update each existing pack with those additional assets.