Was entertaining enough and finished main story missions but each mission was a struggle which brought the fun factor down, was alot of work. There is no hard medium or easy difficulty settings. The weapons wore out to quick and if you died and respawned the weapon wear was the same as when you died, this made some missions hard where you didn't have a workbench handy. Plus their wasn't enough in game cash to keep your weapons repaired and upgraded and not enough medpacks during certain missions. Tried doing some of the side missions but got be about near impossible with what kind of zombies that got loaded. Did one mission in the sewers looking for the seismology things and on the final one you find they load a mutator, screamer and a butcher all in close quarters and you can't run away or a timer starts and you have to run back into the frey.