This game was alright. I really liked the look of the cacti but otherwise it's pretty barebones. I also liked the song but not sure how well it fit the game. I found that the sword was slower than the rock? XD Also after the wave where I got the sword I couldn't move anymore. Well, I could move a little bit, but only to the right and it didn't seem to correspond to the key presses. I also wasn't sure what the number at the top was. At first I thought it was a timer, but I think maybe it might be health? Or the number of cacti left to kill? I couldn't figure it out. And the description said killing the cacti would make them leave tiny ones, which made me think they'd actually appear on-screen, but they didn't. In fact, I had a hard time getting the big cacti to disappear before the end of a wave. Maybe that's intentional, but it wasn't what I was expecting. The shop was neat, though.
You have the beginnings of something good here. Keep up the good work!