Ah, thought 5 was a Romero just couldn't remember which one of his CGI heavy entries it was.
Just no. 1 that remains a puzzle!
I thought 1 could of been one of the JC films due to the dude dealing out the damage wearing a dusty overcoat, but it could be a zombie... I want to say one of the Blind Dead films but the effects look more '80s or upwards than '70s...
I know I'll kick myself when someone names it, too.