You need to make the upgrades and gold permanent. Resetting everything back to zero every time you die makes this game nearly unplayable. And after that, you need to let us spend our money after a round, before starting the next. Or pause to upgrade. Trying to read and select upgrades while trying to dodge mobs is terrible. Also, enable auto-shoot or click to shoot.
And now I'm going to rant, because this legitimately upset me. Change your screenshots. Unless there's some form of meta progression I'm missing, those screenshots you posted are total lies. Let's ignore the INSANE firerate at 39 seconds. How did you have 743 gold at 64 seconds?! That's 11.6 gold per second, from the start of the round. That's over TRIPLE the 9 per 2.76 seconds your screenshot shows. And that's not even including the cost to get all but one upgrade to level 3! Literally, the only way you did this was by cheating with some form of dev console, or by playing a version of the game where gold and upgrades persist between runs.