Trading System Hotfix

Trading System Hotfix- Fixed bug where in some cases items did not unlock after purchase
- Refactored parts of the trading functionality for better stability
- Rebalanced prices for ammunition and grenades – these values now scale with game difficulty
- Rebalanced drop chances of loot from enemies – also affected by difficulty level
- Added new items to the store, including weapon modules, ammunition, and equipment
- Some minor fixes
Thank you everyone for your feedback about the recent update!