Hi, played for about an hour and a half so far. I have some advice for changes:
• Needs to show how much money you have on screen instead of having to go to the hero upgrades.
• Needs a "restart" button after you die. This way, players can choose to just continue playing or go upgrade when they know they don't have enough money to upgrade.
• Audio keeps reseting to max and "Master" volume seems to do nothing once in combat when this reset happens.
• Please give control of characters with mouse or if it's just keyboard, please allow us to move the selection when picking upgrades with the wasd keys instead of needing to use the arrow keys too.
• For balance, I highly recommend giving the ability to stack stat upgrades. Maybe make each upgrade a lower amount to balance or make the stronger upgrades more and more rare. Stuff like magnet, area of attack, attack speed, etc.
These were pretty important changes for the general feel of the game.