Yeah, the objective signposting is something that I'm not happy with, but didn't get a chance to fix before having to publish. I do need to solve the floor and ceiling problem, but haven't found a way that I'm 100% happy with. The first crack was to scatter reflection hazards on those surfaces, so that the player wouldn't risk using those surfaces without thinking about where their beam might end up, but I should have been more aggressive about limiting how far a player can look up and down.
If I do continue working on this project further, I hope to add more levels in the future to make it more of a puzzle game, and add more puzzle mechanics to the game. Maybe a bonus round here and there where you do get the vaporize everything :).
Thank you for playing my game and leaving feedback. I hope to see you in another jam!