You won’t feel shortage of zombies in this game. They approach from both sides and you have to quickly shoot them. In that moment you start having shortage of ammo.
A guy is in a situation I wouldn’t like to be. There is never ending attack of zombies who like some brain and you face them. Just walk round the place and shoot the undead stream. Luckily, some things fall into you area and believe everything is better than machete. For combos, you get bonus attack and motivation system is included for longer game. You get experience for every dead body to unlock new weapons.