Changes:

Added door unlocking system to the map, unlocking a door will now change it's color to the standard door color on the fullscreen/mini map.

Updated some old rooms.

Reworked an upgrade so that it has more features now.

Did some more work on the previously mentioned new zone.

Almost finalized one of the new mechanics related to that zone.

Optimized a few things which affected large rooms.

Fixed a very old room transition issue.. and of course, the issue was the simplest of things.

Updated some old sprites and tiles.

Brainstormed a few new upgrades and added a sprite for one of them.

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This week was way better than the previous one, not the greatest, but good enough I guess.

I don't really have anything else to say right now so, until next time.