If you are looking for forge versions older than 1.20.1, go to HitMarker Forge

This mod adds a hitmarker that appears on the player's screen whenever an enemy is attacked by them complete with sound.
For best results, install on both client and server
demonstration below

Need a custom mod for a reasonable fee? Just want to chat? Have a complex issue needing additional discussion? Join the Discord:

Want to help support this mod and others? Donate to my Patreon in the link below