New enemy: kamikaze

Jetpack enemy now shoots rockets

Concept for an inventory interface

Update video #1

Basic mechanics & enemies

8 way shooting

Implemented the Shark enemy & water physics. Not sure if I will keep the sinking behavior as default though.

There is a bug with the drop through platforms that I will address at some point.

New weapon: Laser sniper rifle

New enemy: flamer

New enemy: Jet Pack Guy (not final name)

art comission.