Ah, I see. The shader definitely made it all feel consistent, so that was a smart move! I mean, I'm definitely not going to judge for using asset packs, I abused used a single sprite-sheet and font from Kenney for my game - as I can't do art to save my life, let alone do enough of it for a 3-day game jam. Especially in 3D!
"Tank controls," that's what it's called! I knew there was a term for it, but I was struggling to remember, haha. I didn't hate it, per se, and like I said, I totally understand why it was a bit more practical for you to use them. I respect the homage to classics.