I think the spacebar issue is an itch.io error as it isn't one of the inputs in my game's input map. I also agree with the hazards suggestion! During development, the game was too difficult for newer/inexperienced players, so I added the ability to revert to the last position, which led to playtesters repeating the same move until they get it right. To counter this and add stakes, I added a timer that doesn't revert, incentivizing accurate shots without reverting too much. However, I never got to implement it much into the actual game rather than just in the level end popup.
Thank you for the feedback!