Howdy,
So far so good! I’ve made a fair amount of progress today, all I need to do now is sound, weapons, menu state, I’m even considering implementing a highscore board or something because it’s a survival game. Here’s some screenshots of what it looks like at the moment.

The pistol, takes 2 shots to kill an enemy.

The revolver, single shot kill, has a little knockback.
The game play is sort of there, still a bit of polishing to do (player deaths, death screens etc), the collision detection could also do with some improvement. Since we’re participating in the Ludum Jam, (I have 2 more days!) we should get something playable and polished, this means more levels, difficulties, perhaps a highscore board and some music 
Thanks for reading