Yes, that's valid. Most of the game was built as a foundation with much more planned for player abilities, upgrades, and attacks (just ran out of time). So, it turned into a bullet sponge attack system via clicking when aiming at the boss.
The glyphs each represent a different boss ability when rolled, this allows for each boss fought to have different combinations of abilities ensuring battles are not all the same. (Ended up with 7 unique boss abilities due to time, but the game was built with modularity in mind so adding more is super easy. For instance, I was able to add 4 just in the time crunch on the last day of development while mainly focusing on other things that day.)
Thanks so much for playing the game, it means a ton to me! 😊