This game reminds me of Twin Sector. Have a look at the game (available on Steam) to have a look at the things they did well and not so well. We at Wolpertinger Games are also developing something that goes in that direction, but it's still very different.
Best of luck for your project. Working on indie titles of that scale is very challenging :)
WolpertingerGames
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Indie game developer. Meaningful interactive media. Bavarian Legend.