Funnily enough we had a directional mouse attack implemented as an alternative for arrows, it just was more interesting to use arrows, so we removed it. Also yes, we definitely needed more boss variety xD we had lots of life things get in the way towards the middle of dev, so we ended up with a half finished game and only one day left to do it lol, so we decided to just make the one boss we had as cool as we could.
Glad you enjoyed, this was an exploration into shaders for me so im glad you liked that part of it!