When there’s a barrel in water, sometimes when you touch it, something happens where it starts sinking to the bottom really fast, dragging you with it.
I just got killed because of it.
I’ll get more information if it happens again or when I’ve finished the game and I manage to recreate it.
Looks like you’ve discovered a rare species of underwater barrelnacle.
That happened to me once. Nearly drowned to death.
Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.