In the minimap, most rooms are white, some are red and the one you're in is green.
What is special about red rooms? Are there other colors I should be aware of?
The color scheme for the minimap
valdis-story-abyssal-city
Related Solutions
If you move the cursor to the A. Ruin and S. Ruin boxes on the status menu screen, they'll be defined at the bottom of the screen.
Armor Ruin: Determines how much armor your physical attacks will ignore.
Spell Ruin: Determines how much resist your magical attacks will ignore.
All the stats have similar descriptions. This information is also available in the game's manual, though if you're like me you probably didn't know the game has one.
Killing the boss should have given you a new set of magic powers: Ice.
Using the down Ice magic (Ice Tower), you can create your own ice blocks to stand on. Head to the left, near the door where you came in, and climb up on one to get up to the top.
Best Answer
The map is colour coded to show you which rooms contain locked doors. Locked doors require keys to open them, and there are a number of different keys to collect throughout the game. Keys are not consumed on use, so allow you permanent access to all matching doors.
The orange legend for the library key doesn't seem to be very accurate; at least one of the orange rooms on the map actually has a Divine Key door in it.