Hellooo, thank you so much for playing my game! I just wanted to say beforehand that almost everything that you mentioned in the game have been addressed in a post-jam update I am working on! The update is scheduled for tomorrow so I hope you will take a look at it if you are interested and have time to spare.
The stage section is quite unbalanced and lacks proper warnings in many areas, yes. The orange fairies were originally supposed to leave the screen after reaching the bottom - the decision to have them slide along the bottom edge was for players to have additional time to take them out and obtain more point items. Both player teams have shots that fire backwards and you can utilize these to your advantage. I have no excuse for the enemies spawning at the bottom though, the lack of telegraphing for those was entirely my fault and I will get to fixing them immediately. One thing to note though: None of the enemies will hurt you if you collide with them, so please don't be too afraid.
In the post-jam update, Spell 2 now begins with telegraph lines at the bottom of the screen to warn you to get out of there before the attacks start. The amulet explosions are definitely unnecessary and are purely for visual effects when the seeds reach the bottom, so I'll get to fixing that too...
The coloured circles were a result of jam time constraints, I wanted to make prettier graphics but ran out of time so I had to make do with those. I will lower their render priorities so they appear under your player character and bullets, if that helps!
The stage section also has had its background changed, the scenery is now nighttime and will contrast better with the bullets.
Thank you very much for playing again!!! And please look forward to the post-jam update tomorrow! It exists! I promise!