I like the FF Tactics style stacked grids with elevation and it's very cool that you can rotate the camera although i must say rotation is not very comfortable since mouse is very sensitive and it's constrained to a certain angle so i couldn't it get the camera to the position i wanted at all but it's there and it works more or less.
Graphics look nice and colorful but character sprites look cheap and mobile gamey but i think it's acceptable for a 7 day jam, didn't bother me that much.
I didn't like the snake style controls also i'm not sure but i think dragon's tail is getting longer with upgrades and such but i don't see any effect of this in this game other than making the controls more difficult and making it a bigger target for archers. I struggled with the controls a little and some of the basic game mechanics are not explained to the player unless i missed it. For example fire breathing takes stamina and you can only regenerate stamina only by going to the lowest altitude. I like the idea behind it though, it regenerates stamina when it walks on the ground but it's more vulnerable. I like how burning works. When you breath fire on trees, fire spreads to other trees adjacen to it, that's very cool. I died couple of times bumping into houses. It showed a message like you're stuck in a tight space. I mean we're dragon why can't we blow off the roof? :D I like the aggro mechanic. When one of the peasants see the dragon, they alarm the whole town. Upgrading your character at the end of each level and getting new skills adds a lot of depth to the game, i like it.
It's not clear to me what the goal of the game is. When you start each level you see a "x days left" countdown. What happens when countdown finishes, a boss fight? Also i got to level 2 but i 'm not sure what are requirements to finish a level. Killing everyone, or destroying everything? What does the terror bar affect? What happens when terror bar goes full?
Overall i think it's a very creative and unusual roguelike game which is fleshed out very well in many areas for a 7 days time period. I think it can be quite fun with some tweaks and would look much appealing with a more decent artwork.