itch.io

1. Yes it is fun, i have played and i think the gaming loop is fine because every time you start the game you have option to choose other character with diffrent starting powers
2. I think it is, anyone who want to have higher difficulty can rush to the higher levels from the start. 
3. Played for the first time and in less than 2 minutes i knew what i had to do. Tutorial is great, simple and fast.
4. I would like to see option to rotate equiment in backpack - in my opinion that kills the pace of the game. I would like to have small 'avatars' of the item in stash - now every time i have to slowly check what item before wearing; It would be really fun to play the game online with friends - option to invite other player to play fast coop game would be cool;