You can play this game without ever needing to move forwards or backwards, and why would you? You've placed the player in a position where it's easiest for them to avoid any obstacles, meaning the Ctrl key is kinda useless. The game is alright but it could use more feedback and overall polish.
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Yeah, and I fully get that. We made our game far too hard too because we were the only playtesters, and we kept making it harder as we got better. What I was suggesting was that you should maybe try adding some events that would be more convenient for the player to move forward or backward like pedestrians crossing the road. While they still would be avoidable moving left and right, it'd be much more convenient for the player to try moving forward or backward to avoid them.