This application is a game mod that changes the animation style of the player character. The idea is that different weapons will show different animations, depending on their type. It's an interesting idea, and the developer thought that it would be a good mod to try out.

It would be a good idea to include some animation sets that represent the physicality of the character's movement. So, for example, there is an animation set for unarmored, which is a typical movement profile for a player with no armor.