You can attack twice instead of once whenever you take the Attack action on your turn.

You can cast without verbal, somatic, or material components while invisible, and you can turn invisible as a bonus action for up to 1 minute, ending early if you make an attack roll, deal damage, or force a creature to make a saving throw.

Mark a visible creature as the quarry of your ongoing pursuit. The mark enhances your tracking and allows the spell's extra damage when you hit the target.

When you hit a creature below its hit point maximum, deal an extra 1d8 damage once per turn.

When you miss with an attack roll, turn that miss into a hit. This can be used once per round.

Enter a state of heightened awareness, gaining temporary hit points and becoming harder to surprise.

You always have Hunter's Mark prepared. You can cast it without expending a spell slot a number of times equal to your proficiency bonus per long rest, and you can cast it using spell slots as normal.

You gain mastery with selected weapons. Sentry has mastery with the longbow, shortsword, scimitar, and handaxe.

You can cast prepared ranger spells using Wisdom as your spellcasting ability.

You gain the Archery Fighting Style, granting a +2 bonus to attack rolls with ranged weapons.

You gain Expertise in Perception. You also learn two additional languages, Draconic and Goblin.

Sentry is a Hunter ranger. They gain Hunter's Lore and choose Colossus Slayer as their Hunter's Prey option.

You gain an Ability Score Improvement or another feat for which you qualify.

Your Speed increases by 10 feet. You also gain a Climb Speed and Swim Speed equal to your Speed.

You gain Advantage on Initiative rolls. In addition, you can move through nonmagical Difficult Terrain without extra movement.

You gain an Ability Score Improvement or another feat for which you qualify.

You gain Expertise in Survival.

Colossus Slayer deals an extra 1d8 damage once per turn when you hit a creature with a weapon attack and that creature is below its hit point maximum.

You gain an Ability Score Improvement or another feat for which you qualify.

You can invoke your military experience to gain recognition, temporary shelter, or basic assistance from soldiers and veterans of organizations that respect your former service. You may also identify military ranks, insignia, tactics, and common organizational practices.