Finished the prototype, you can play it here: http://agegames.16mb.com/#/games-list

Improved the collision of bullets vs enemies.

Fixed a bug.

Added basic attack to player.

Player now takes damage from enemies attacks:

Added collision logic when player overlaps item.

Refactored the HUD class. Partially fixed a bug related to camera size.

Added HUD. It just displays the life right now, but it's something.

Added AI to enemy. Now follows the player and attacks him.

It's horrible, but I made it in under one hour. Tomorrow I'll improve the code and probably the title too.

I'm proud of it considering the little time I have.