Sunken Portal

As a roguelike, the game will be divided in zones or levels, but instead of having a prefixed order, you choose the order of the areas

Depending on the zones you chose, you will face a different boss at the end, to complete the game you will need to find and slay all of the bosses, the path to certain bosses will be a secret 

For example, each letter represents a zone and the order 

A ->B ->C ->Boss 1

A ->C ->B ->Boss 2

C ->A ->B ->Boss 3

The zones will become more dangerous as you progress throw the game, but you'll be able to buy cool permanent upgrades at your base 

Current bugs

The rocks at the center of the levels are caused are a bug of the Unity's tile palette 

Some times the player would not be able to shoot for a couple of secs