1. Object-Oriented Programming & Class Design | Implementation of EventItem and Character classes, private attributes, constructors, and getter methods for encapsulation. 2. Array & Object Management | Declaring an array to store multiple `EventItem` objects, initializing with predefined values, and storing event details for game simulation. 3. Algorithmic Logic & Calculations | Implementing `CalculateScore()` method to determine event success probabilities based on skill levels and event difficulty. 4. Game Simulation & Competition Logic | Creating two character instances, iterating through events, comparing scores, determining winners, and handling draw conditions. 5. Queue Data Structure Implementation | Declaring a queue using a class or record structure, implementing Enqueue() , Dequeue() , and ReturnAllData() for queue operations. 6. File Handling & Data Processing | Reading from HighScoreTable.txt, storing data in a 2D array, outputting results, sorting scores by game level and descending order, and displaying rankings.