D&D: The Worth of Steel
The Champion focus on honing their raw physical might to deadly perfection. They seek to overwhelm their opponents with brute strength and steadfast resolve, and while they might be uncomplicated opponents, they are no less formidable.
Improved Critical: At level 3, your weapon attacks score a critical hit on a roll of 19 as well as 20. You also score a critical on a roll of 18 starting at level 15.
Remarkable Athlete: At 7th level, you add half your proficiency bonus (rounded up) to any Strength, Dexterity or Constitution check you make that doesn't already use your proficiency bonus. In additional, when you make a running long jump, the distance you cover increases by a number of feet equal to your Strength modifier.
Additional Fighting Style: At level 10, you can chose a second Fighting Style.
Survivor: Starting at 18th level, on each of your turns, you regain hit points equal to 5 + your Constitution modifier if you have no more than half your hit points left. You don't gain this benefit if you have 0 hit points.