Thanks so much for trying our game and providing such a informative and constructive comment!
As you mentioned, the guidance and the jumping feature are the biggest drawbacks to make frustrating experience. We've figured out why the guidance light flashing so fast (it was not designed to be that way) . The bug zone of level 1 was noticed as well. So the next thing we'll do is to reconsider the tutorial part and polish the jumping mechanics. Soon the developed version will be seen after the jam!
Thank you for giving so much advice again, for this is our second game jam, and you kindness really will help us improve this game and do better in the future.