The droid BD-1 can project a 3D map Metroid Prime style

BD-1 can heal you but the number of heals is limited

You can revisit previous areas and unlock new areas with new powers

You can avoid specific enemy encounters

There is looting in the game and you can loot different things like lightsaber crystals, hilts, clothes, etc

There are several things you can customize like your appearance, lightsaber, BD-1 and your space ship

No multiplayer or micro-transactions (or so they say)

You cannot go Dark side (honestly the impaling finisher is definitely not a Light side thing)

There are secret explore-able areas