I think your sound design and music works very good! A great take on the vampire survivors like.
I'm really nitpicking here, because overall it was very solid:
I was just a little confused at first about how to remove weapons. Turns out it made sense, but I thought it was only Q. Maybe have an eject suggestion show up when out of ammunition?
I like managing your heat, but I think I would rather it be connected to something else, because just blasting through a weapon is nice and easy to do because by the time you're done, there are usually 3 more weapons to pick from.
Viewing post in The Steel Corps jam comments
Right after I had some sleep after the last long stretch before submitting, I realized I should have doubled down on the ejection and overheating system. Like, making a critically heated weapon a true ticking bomb that could actually fend off a group of enemies, so pretty much every weapon could be used as a grenade if that is the decision of the player, just by increasing the radius and damage of the explosion.
But, thats for a post jam update, unfortunately. Anyway, I am glad you had fun with it.