@someone thanks for playing and giving some really valuable feedback. -The turret upgrades increase their fire rate and aim speed and give them a small health increase. Both strategies are viable, but I think upgraded turrets might be better.
-The upgrades on the side add new grinders onto the the front of the crawler so you can auto collect resources faster. In the post jam version we added new upgrades with UI on those terminals.
-The rifle is a post jam addition you can purchase and switch between (mainly got the info on here since we don't have any in-game popups).
-At the top terminal where you deposit 500 credits, it also adds a minor repair of around 500hp the crawler has 10,000 total.
-Post jam version has the power meter on the main HUD.
We definitely would like to do a big UX pass over the game to really help clarify some of these areas, a starting tutorial would certainly help.