Really enjoyed this game! The movement takes a little finesse, which I liked. Finding the right angles and inputs takes some focus. Going to focus on constructive feedback, but I do want to say that it's fun. Being able to drag and drop parts onto the player was nice, and the varied parts make gameplay a little different each time, which is cool.
1. Relative to the number of enemies, I did want the basic mouth attack, the bomber, and the spike attacks to trigger faster. Especially since it's tricky to aim, and because you can't replace the front mouth with something more effective later in the game.
2. It would be helpful if the main body was visually a little different from the extra bodies you can attach - slightly different color and/or slightly different size. So that the player can distinguish which direction they're facing, and which part will take damage if hit.
3. After about 3 minutes, I collected more cells than I knew what to do with. I did want to be able to attach 1 or 2 more parts to each body, if not more. I felt like I ran out of room quickly, and I had lots of cells that I couldn't effectively spend because I didn't have space for more body parts! Maybe a costly spacebar AOE attack or something for crowd control.
4. It would be cool if there was an additional enemy type that moved a little faster, or more erratically. Overall, I wanted the player character to feel more effective at killing enemies without driving down the difficulty. Introducing some trickier enemies as the player progresses could also reduce the performance strain, so that you don't have to spawn so many enemies to scale difficulty!
I got to 12 bodies at around 7 minutes of playtime. Then there were so many enemies and collisions happening, my macbook couldn't run the game properly xD Until then, it was fun!