Little bit of a feedback, I've seen a few people having an issue where buttons just suddenly become un-clickable. It has fixed on its own for some people while for me it fixed by changing my browser's zoom then changing it back. Unsure if it occurs across various browsers, I have Chrome. Either way, maybe it should be looked into. Sorry I can't provide more information.
At the moment, it feels like both upgrading and buying new gear levels do not work well together. Better to focus on just upgrading gear level and ignoring upgrades usually. Just some input.
Also, an easier way to access bosses would be nice so we could break the monotony and cycle through them for some bonus exp/pixels if we like. Maybe a separate dropdown or something?
Fun so far. Bit rough to move to new monsters though. It doesn't really encourage moving on because your damage doesn't scale as much as the monster health. I'm level 111 and the best monster I can find to hit for the best exp and pixel ratio is level 60. That includes a maxed out level 110 weapon.
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No problem, glad it's working!