Played through the easy, medium, and hard tutorials, and then a couple levels with the civilian fleet, on version 3.5. I liked being able to configure the ships with different options, and choosing ships with different predispositions to start with (power vs speed, etc). I also thought the styling and art were good.
I was playing on a laptop (and thus a smallish display with a little less brightness than typical desktop displays) in a brightly-lit area, would have appreciated a little more contrast. I think the main menus were fine, but once I started the tutorial, things were harder to read. My display was already set as bright as it would go; I didn't see options in-game for contrast adjustments in the settings menu, but something like that might have helped.
The easy tutorial let me choose different weapon types, but it wasn't clear to me what the tradeoffs of the different weapons were. I went with the laser for this one, and it didn't feel especially effective; fortunately, the missiles helped with that. The ship speed felt a bit slow, but I figured that might be a purposeful function of the large ship size as compared to my opponents. It took me some time to get used to the "tank controls" (movement keys working with respect to the ship orientation rather than camera orientation); I know some players prefer the tank controls, but maybe there could be an option to choose between the two?
On the medium tutorial, I skipped placing the smaller ships. I was unable to drag them out when the tutorial popup text explained about their positioning, and then the tutorial went right into outfitting the flagship after that. Then it seemed like it was time to launch the flagship, so I did, with no smaller ships. I still won, but it seemed like I missed part of what I was supposed to have done. It felt like the projectile weapon had a more noticeable impact on enemy health than the laser did.
On the hard tutorial, for the first time, I tried ramming the enemy ships, to see if my superior size and and shielding would be another way to deal damage. This time around I'd placed the allied ships, though, so even when I stopped shooting to try to see if ramming was doing anything, the allied ships were still firing, so I couldn't tell if I was actually doing any damage this way.
I had a hard time keeping an eye on the indicator bars (shields, energy, hull) while playing. I was mostly focused on the ship and projectile movements, and without focusing on the bars instead, it was a little hard to see the levels. I didn't really want to take my focus off the combat, though, so mostly I wound up ignoring those indicators.
I couldn't tell if there was a way to repair the hulls of existing ships at the shipyard, or whether permanent hull damage was intentionally part of the difficulty. I've played games that handle it different ways, but the tutorial hadn't dealt with existing hull damage, so I was a bit surprised.
The civilian map I got at first had a shipyard after the first level, and I was a little surprised that I couldn't go back to the shipyard after the second level. I'm in space, and I'd cleared out the enemies, so it didn't seem like there would be anything to stop me from going back. I was even more surprised to find that when I left the civilian region and re-entered, the map changed, which meant I was able to just repeatedly leave and re-enter until I got a map with an available shipyard. Maybe that's an intentional way to let players reset their level progress if they're low on resources?