Lagging Zombies

Fellow Adventurer, The Crown of the Undead Prince lies ahead in the Graveyard. It is a dangerous place, filled with Zombies. And the worse thing is, THERE IS NO WIFI!!
You will have to use your very poor mobile data to venture forward, which can cause delay in your actions. Keep that in mind while going ahead.
I wish you the best of luck.

Controls:
Left/Right to Move
Up to Jump
Space to Shoot

Game made for Trijam #78
Theme: Delay

Time Taken (According to my timer)
Sprites: 1 hour 3 minutes
Programming: 1 hour 29 minutes
Bug Fixing: 27 minutes

Total Time: 2 hours 59 Minutes ( Very close )

Sprites made by me
Sound effects taken from freesound.org and opengameart.org