Recently, my friends and I played a new adventure called "March of the Dead." As the GM, I gave the players two level 8 magical items and two level 5 magical items, and even then, the damage caused by the players was barely enough to defeat the enemies. Moreover, many of the feats chosen by my players were simply unable to be utilized in combat. The battles often consisted of the players moving and attacking, followed by the monsters' turn where the players would be left near death. The cleric would then spend their actions to heal the players. If it weren't for the wand I provided for the wizard player, they would have been unable to deal even one-seventh of the monster's hit points in damage within a single round.