While I found the pace of the tutorial to be a bit on the slow side, I think stuff like this is a great idea! This game has a insane learning curve so doing tutorials in away that distracts from the learning process is great. This would be a great opportunity to expand on the lore and that might give more experinced players a reason to run through them. Also common/uncommon item rewards at the end of each level woud be a nice carrot on a sick. Maybe i'm just dreaming here but if this turned into a mini campain for DOTA 2 I would be psyched, the engine you guess use is really rich and i would love to see a Valve sinlge player game using the artstyle/isometric view in dota 2 now! Keep up the good work!