I'm running a wild west campaign for my party and it's been troublesome. Everywhere they go I set up a town or encounter depending. They have no direct story they need to fallow and are open to their choices of good or evil.

In recent they have been trying to solve this zombie plague outbreak. They tracked it down to a old abounded mine out in the desert. On their way they fight a zombiefied Paul Bunion (flesh giant) and his blue ox. It would be hard fight but not a boss fight. Two party members die in the fight as the party thinks 20 unarmed strikes on the Giants balls is funny. I understand it would be funny once but multiple times and a difficulty multiplier because he's a giant annoyed me.

They get to the mine. Small town outside and they had to help the pepole defeat some zombies coming from the mine. The townsfolk give them all new weapons, were slightly better guns but nothing major. They don't roleplay with any town folk just listen and leave. They have to cross a rickety old bridge to get to the mine. If they roll perception they'd notice it can't be crossed by more then 1 person at a time. I ask how they cross individual. The gunslinger charges across alone as he's bold (personality in game). The others cross as a group and have to make a con save. 4 succeed, 1 falls take damage and the others help him up.

They go in and see a Boulder block the rest of the path and they grab a pic axe to mine through it. It's a Galeb Duhr in Boulder disguise. They kill it easy. They push through zombies pretty easily, get stuck on a puzzle for 20 minutes. Get past it. Get to the "loot room". They all rush in trying to get first dibs. Ignoring my description of the crumbling floor.

The floor drops under them and into a large water pool. They get up and notice a large emerald floating in the air. The gunslinger shoots it 6 times with a natural 20 and knock it over. It shatters but reforms into a stone golem. Party struggles with low roles and not high damage outputs. I use d6 for which one the monster targets unless if someone is in Melle with them. Our druid wild shapes into a regular horse. Golem mistifies it into a red dust with a natural 20 and 18 damage. They kill the golem. Get the large emerald they could sell and 10 smaller ones. Curing the plague.

The druid is mad at me because 2 sessions in a row their Oc is killed. I'm not targeting the druid in anyway but punching Paul Bunion in the balls and transforming into a horse is not a good idea to live long. I tried my best but I'm starting not to like the campaign