If you so choose, you can "turn on" your bioluminescence and shed bright light for 30ft and dim light for an additional 30ft

You're able to squeeze your abdomen and shoot out a globule of the bioluminescent mixtures towards a creature within 60ft of you, dealing 1d6 acid. In addition to this, the chemical mixture in your abdomen reacts with each other causing said mixture to glow, giving all creatures within line of sight of the target advantage on their attack rolls. Additionally, any creatures within a 10ft sphere of where the globule lands must make a DEX saving throw or suffer the same effects as the initial target.

If a creature lands a melee attack on you from behind and they aren't wearing armor, the toxins on your abdomen rub off and deal 1d4 Acid damage to the attacker. If they attack with a melee Weapon instead then the creature must succeed on a DEX saving throw or take said 1d4 Acid damage.

You can speak common and 1 other language due to listenings about the place

Despite your small stature you're quite astute. Your CON score increases by 1