Upgrade Everything

Submarine tiers? Nonsense! Classes? Merely an indicator, but surely not a diagnosis! Now you're free to upgrade every single aspect of your ship, of any ship... providing that you've got the resources for it!

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This mod removes all those purely artificial Tier-Class restrictions of the submarine upgrades and adds a price in resources for each upgrade - something that developers have apparently found really difficult to do in all these years since the shipyard update was released (introducing that mechanic for the wall category only, feels like a huge loss of potential).

It also reintroduces one of the oxygen generator upgrades and adds a completely new one, the doors.

Since I have made submarine tiers negligible in the context of the shipyard, I have also changed two mechanic perks that interacted with them.

Why would I do all of that? Because I am the type of player who hates being told how to play the game. And even more importantly, because I see no logic in the situation when humanity colonizes Europa, practices full-blown genetic engineering, and invents a bloody nuclear rifle, but cannot install a simple mineral scanner on a battleship or fully upgrade its hulls "because its tier is too low". My personal approach to the game is based on player agency, where one is not restricted by the game's numbers and constants, which have no practical explanation, but by a real lack of resources and money to upgrade everything at once. Progressing further through the game only makes these restrictions temporary, and that's what I call good progression.

Oh, and also this:

Only Deep Divers have been able to get through the last few levels of the campaign, because even the fully upgraded hull of a ship other than a Deep Diver did not offer enough pressure resistance. We want to change that and allow you to finish the campaign by upgrading the ship of your choice.

(See here)

• Added submarine tiers. Higher-tier submarines can be upgraded further than lower-tier submarines.
• Submarine class now affects which upgrades are available for the sub.

(See here)

...Gee, thanks.

...but fret not, now you actually can finish the game on your favorite Barsuk you've picked at the start.

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So what makes it different from the other "Upgrade Cost Resources" mods out there in Workshop?

Different resource costs, obviously. We don't share the same brain, after all. Tried to keep them logical and progressively more expensive though. Added oxygen generator upgrades, reducing its power consumption and improving durability. Added Doors upgrades that improve the durability of all your doors and hatches. (Hear those mudraptor cries? No more of them opening your fully upgraded sub as easily as if it was a tin can!) The Mechanic's "Retrofit" talent now gives you a permanent discount at any shipyard you visit. The Mechanic's "Iron Storm" talent now gives you scrap with a 25% chance of receiving it whenever you repair a mechanical item; up to four times per round.

Technical info and compatibility

I would not recommend turning on or off this mod during the active campaign. While turning it on in the middle of the game may be harmless (you will just miss a few upgrades that you would have otherwise had to pay for), turning it off definitely isn't an option, as this mod introduces new upgrade categories, and I can't guarantee that the game won't break if you suddenly turn those off.

As for compatibility, it's simple - as long as you don't have any mods that override the upgrade modules or two mechanic talents (Retrofit and Iron Storm), everything should be fine.