Hardcore Campaign Mode/Custom hardcore options

Some of these can be folded into custom campaign as necessary under hardcore options.

As the title implies a campaign mode for those looking for a challenge and more weighty decisions.

For a hardcore mode I’m thinking no permanent character upgrades, limited/restricted weapon attachments and reworked economy to make lower and middle tier weapons more attractive as well as dead drops. Naturally this could be iterated on with further rebalancing or mechanical changes as deemed necessary.