Wings of Liberty: Contingency Contracts

Also known as Wings of Liberty: Tactical Arsenal Nightmare Challenge Gauntlet Randomizer Race Swap Edition
A custom campaign that lets you customize each mission with modifiers called "Contracts", incorporating elements from multiple mods.

Inspired by the Contingency Contracts game mode from Arknights (which was arguably also inspired by Starcraft Coop mutations), Contingency Contracts is a mod that lets you customize each mission’s gameplay and difficulty through toggleable “Contracts”. It also incorporates existing Custom Campaign mods and allows you to toggle them individually or mix them together in each mission.

Contracts are broadly divided into two kinds: “Contingencies” which increase the difficulty of the game, and “Supports” which decrease the difficulty. Each contract is assigned a level based on how difficult/powerful they are. Completing missions with Contingencies rewards the player with extra Credits or Research points, while using Supports cost Credits or Research points.

The player’s credits and research points are carried in between missions and can be spent on Armory Upgrades or Research just like the base game. Unlike the base game however, the player starts Liberation Day with 200,000 credits to be able to afford Support contracts immediately, and will be able to earn Research Points starting from mission 2.

In other words, it’s like custom mutations, but fully integrated with WoL’s credit system and expanded to also act as customizable mods.

Currently incorporated/recreated mods:

Nightmare mod by Rhyme
Tactical Arsenal by Pierre
Challenge Gauntlet by Mindhawk
Wings of Mengsk by Zishen
Race Swap by Synergy (Not actually used. I recreated everything for Protoss and Zerg race swap on my own)
Randomizer (original concept by Gertimoshka, but I made the randomizer for this mod myself)