The multiplier is a number that multiplies the points you get from kills. You receive multiplier points for each enemy killed. A zombie would normally give 100, and a devil, 1000- with x2, for example, you would recieve 200 or 2000.
- Killing zombies helps your multiplier.
- Kill Devils at high multplier values to get more points!
- Upgrades/Weapons are acheived faster at high values.