Combo-Based game
In order to satisfy the single-responsibility principle and the open-closed principles, I've opted for the following implementation of the specification.
Combo houses all the Move objects, where the Move objects act as Nodes in a Linked List. The Move objects contain an Integer object within them that houses the damage associated with the Move. It also houses the appropriate methods (refer to the JavaDoc of them) to satisfy both general cases, and some edge cases that are relevant to the ComboADT specification.
There are 3 pre-made classes that inherit the Move class: Grapple, Tackle, Disarm. Those come with their pre-determined Damage values, and are made to show the open-ended aspects of the design.
The Player class is a representation of an abstract player that contains the player's health, won rounds, and ID (for the sake of open-ended, we can extend this to more than two players in the future so we use IDs) and the current Combo Move set.
The static Game class contains two CONSTANTS that are named adequately to explain their purpose, the beginGame method, a bunch of its helper methods, and the main method. The beginGame method simulates a fighting game. The players take turns to perform actions. The actions can be adding a move to a Combo at any position or perform their combo. If the player performs the combo, they deal the prorated damage to the other player, then they remove all the moves from their combo as part of the game rules. If the total damage dealt to the player reaches the relevant CONSTANT of the player in value, the player is declared defeated, an increment occurs to the winning player's won rounds, and a new round begins. The comments explain the purpose of the methods.