Hey there!
Thank you so much for the kind words, I'm thrilled you are enjoying the game!
To answerer your questions:
1. Yes! Unity doesn't handle lighting too well so I need to code a custom solution to allow for multiple torches and Light-sources. Then I will add night time. I am also planning to introduce an entire weather system, allowing you to create and move thunder- and snow-storms, control fog, light rays etc. (Check out Aura 3 for unity for what's to come)
2. The character creator is on my list of things to do and in the first version it will allow you to change the masks/helmets/shoulder pads of each character. As the game progresses I'm hoping to add a much larger variety of characters and creatures to give you more freedom to play!
3. I've just tested it on a couple of other computers and it seems to be working fine.. In the first patch I will add a keyboard control menu to give you the option to rebind keys. Until then, try saving and restarting the game or maybe temporarily change your keyboard language while playing.
I would love to see some of the maps you've created! Feel free to join the Discord where I will be posting updates and hosting discussion.