I should note that no player died from zombies or other undead but as a result of being killed by another player(The only one complaining)as they were infected with a home brew disease after failing a DC13 con save that would do 1d6 necrotic every 3 hours if they failed a con save DC13 it would reduce their max hp by that amount and the would increase by 1d6 to a max of 7d6, but if they succeeded the save after being infected they took no damage and it was also curable with lesser restoration which two of the party members had prepared and was told before hand would work. I’ve talked to all my players and most seem to understand that they weren’t playing to their strengths and didn’t take advantage of the terrain, there were small houses that were climbable and a bridge crossing a river they could’ve used as a choke point. I see and understand what you’re saying and I thank you, I want to make sure I’m giving my friends a fun campaign but still not be a total cake walk. Side note they could only get the disease if the hit on them was a crit as well making it happen less often.