If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Ninja vs Zombies 2 is unique action game combining the best aspects of platformer and fighter genre. You need to combine your acrobatics skills and mighty weapons to defeat hordes of zombies.
Arrow keys or WSAD to move and jump
Mouse to aim and attack
Q/E to change weapons
F to cast fire-spell
Space to perform special attack