Hahaha as for the score, I guess there are only 2 of you who shared them here!
As for the gameplay, I guess it's too repetitive, of course one player could do this as long as they like (as long as the random spawns favors the amount of healing pickups) but that would be too boring in the long run.
I could add an increasing difficulty in-game in long periods of time, and even add few spices in it.
Anyways, thanks for playing the game! (My highest is 197 to be honest)