Chances are you've seen those Huskies that are blue/grey, shiny, with glowing red eyes that don't seem to die. You think you've killed them, but they just lie on the ground for a couple seconds before getting back up again. No matter how many times you take them down, they keep getting back up.
If you haven't played through the current season questline involving the Meteor, (Which tells you their weakness,) THEIR WEAKNESS IS FIRE AND ICE ELEMENTAL WEAPONS. The last hit that kills the Chrome Huskies MUST be FIRE/ICE or else they will just keep getting back up.
It dosen't matter how much damage with whatever powerful weapons, traps, or gadgets you use on them, EVEN MYTHIC STORM KING WEAPONS ARE USELESS, if you do not finish them off with Fire/Ice weapons, they will just keep getting back up. Also, when they're on the ground, they are invulnerable, so don't bother wasting your ammo on them. Wait for them to get back up, and THEN hit 'em with the Fire/Ice weapons.
Thank you for reading. Stand and fight!
Source: https://www.reddit.com/r/FORTnITE/comments/stljfd/psa_for_newer_players_on_chrome_huskies_the_ones/