Feels a bit odd and might be a bit out of my alley. There is something good here but it needs more polish.
The good:
The visuals are both good and lacking. It's very difficult to tell how and where the player is moving when the background remains stationery at all times. Some particles or space debris to help ground the player movement is better.
Otherwise, models and sounds are generally in tune. There is a space-esque art direction to this that I see the team is going for.
To improve:
The gravity mechanic, while interesting, seems to be very flat in how they affect gameplay. A single blackhole mitigates all enemy bullets, can heal you, and is a great counterattacking tool, and affects the entire map.
It's too strong. And the only counter to it is a spaceship that immediately destroys it.
The design is very black and white and lends itself to somewhat flat gameplay.
If the blackhole affects a smaller radius, and or takes time to charge up and become effective, it may add more nuance to the gameplay rather than being too centered (and overshadowed) by it