Definitely one of the most collaborative games I've seen in the jam which is nice. And also a really fun high score game. Though I will say the "score" not being super visible during gameplay is a little, weird. I guess. It could help make it more interesting if it was counted mid game, I know the dust is counted at the end of the game, but to be honest that final screen is really packed. Which, is good for information, but not so good for being able to tell what it's talking about at a glance.
To be fair though that does make sense and it does have the information which is helpful to see. Especially if you're going to try and get a crazy high score and so you want to optimize for different stats that performance well (personally I went for fire rate).
Otherwise though the only real issues I had would be with the UI at the top interrupting gameplay bit, since the cat was able to hide under it, which lead to me getting hit quite a lot if I went near the top of the screen. As well the fact that the camera was a little too stuck between the cat and the roomba a lot of the time. Which led to a lot of situations where I wasn't really able to see the cat.
It makes sense trying to avoid you leaving the roomba behind, but it definitely makes it difficult to try and kite enemies around it sometimes when you managed to get a relatively big group. I feel like if it prioritized the chat a bit more it could possibly help, or if the cat was always locked on screen, possibly with a zoom. Though that may be a bad idea.
Besides that there are a few issues with how the roomba pathfinds to the treats, tho those are more bugs than anything it seems like (specifically with it hanging a bit when you shoot out a lot of treats in different directions.
Overall though a really interesting take on the theme with some really collaborate gameplay, unique enemy designs and what seems like could be some complex strategy to the use of treats and upgrades.