Hrmm, this is a rough one for me! I really want to like this game as it does have a decent level of polish and juice to its craftsmanship and presentation, but I found myself very bored in no time as the core gameplay is incredibly shallow, repetitive, and one-note: it takes no time at all to see everything the game has to offer and there is no significant evolution as it goes on. It feels more like a rough draft or a prototype that hasn't yet found a core gameplay loop or unique concept yet.
As said, the game is quite lively and juicy, yet simultaneously very bland as well. Apart from some nice special effects for timed bounces and the psychedelic animated background, the game has a very bland, empty and almost clinically sterile look and feel to it when it comes to elements like the paddle and the unchanging world as you proceed forward in levels.
Compared to the lively title screen, I was really disappointed at the bland wall of text that is the tutorial. I'll grant you that it is at least categorized properly and tries to space out the sentences to help with reading comprehension, but I would much prefer if there were pictures or animations to help. Also the tutorial keeps repeating the same instructions over and over for some reason: if you can't even proofread the tutorial properly it doesn't give me much faith in the rest of the game. And to top it all off, the game says I can use WASD in the tutorial, yet it doesn't work and instead I had to use the arrow keys.
Bump timing for powerful bounces could be a fun mechanic, but it just felt incredibly frustrating and awkward to get used to it: it felt like you need to time the bump way too early when I expected it to be right when the ball hits the paddle, and even taking this into account I was constantly having my bumps not bounce the ball, leading to tedious gameplay in an already very repetitive game.
As said, the game feels like a step back from tons of other games that have come before it. Compared to more exciting powerups like being able to shoot bullets, summon multiballs, slow-mo, catching the ball, and so on, this game's powerups that just adjust paddle width and speed feel dire and don't excite. The bonus level doesn't even feel like a bonus level since it doesn't have its own music track or exciting scoring system. And as already said, every level just feels the same with no interesting layouts or new exciting mechanics: a couple bouncers being added here and there doesn't thrill me and keep me engaged. It just feels like a big waste of effort and is so incredibly outdated: I'd rather play something like Arkanoid on the NES which, for being decades old, has many times the amount of content and variety than seen here.
I want to like this game and think you've got a potentially great team here that can get stuff done, but there's just absolutely nothing exciting or fun about this game in its current state: it is the most bland student project paddle game, a bland scoop of vanilla ice cream with no sprinkles or whipped cream and definitely not a cherry on top. Make sure there is a focus on fun and addictive core gameplay in your next project before anything else.