well explaining to players that they even can heal is probably something you could do (unless I missed that explanation) and like I said maybe implement some sort of mini-map or have an intensity in your indications, and have them be smaller, like right now iirc the whole side of the screen lights up, which is fine, but I feel like could have been done better with smaller indicators and maybe clearer sounds if you actually do get hit, like if they are close or like very close.