love this honestly, my only gripe is i genuinely couldnt keep playing due to the buzzing sound of the cutter. in its current state with it being the same low drone, it really gets irritating quick. one idea i had was making its pitch change in accordance to something, maybe the amount of damage youre doing or how long youve had it on a plant consecutively, or how many plants youve killed in a row, possibly even player movement? just something that not only gives it more variety, but also reacts to the game in some way. would love to see where this goes. keep it up!
edit: i only just realized that this was supposed to be a quick project to challenge yourself, whoops. even so i hope my constructive criticism can be of help :)