Right before releasing the game I lowered the cost of "auto attack" upgrade significantly but it might not be enough.
I designed the game specifically with "clicking first, then getting an auto attack upgrade" in mind. Now that I think about it, it might be better to design it without clicking at all in mind and optionally leave clicking for players that like it (like me). That would give all players a better experience and could allow me to balance the game better. Especially early game feels sluggish a bit and you only start feeling powerful when you get to Auto Attack upgrade level 10 or so when Auto Attack interval drops to 0.52s. It becomes REALLY fun when you get to 0.2s. Yeah, the more I think about it the more I should design the game with increasing Auto Attack speed first.
Thanks for playing!