This HUD is developed by FILIPKZ, it is a addon and a third-part extension to the game surviv.io and isn't any official surviv.io extension, the game developers of surviv.io have NO responsibility for the HUD, the HUD is 100% by FilipKZ, make sure to give credits to the HUD if you share it and also:

This HUD was first created 2018
Latest updated may 24th

Requies tampermonkey to work!