Lizardfolk’s scales and bodies are highly resistant to many forms of elemental damage making them extremely resilient to being harmed. 

You gain resistance to acid.

Lizardfolk scales often are coloured to blend in with their surroundings, often making them extremely difficult to spot in their natural habitat.

When in a swamp, in foliage or in a forest, you can add four to your stealth rolls

Lizardfolk are masters of the untamed wild, able to survive in harsh environments and even underwater

You also gain advantage in survivor checks and trained proficiency in the survivor skill. You also can breathe underwater for up to thirty minutes and shallow water does not give disadvantage. 

When backed into a corner, the cold-blooded creatures of Allurian instincts can take over, sending them into a murderous rampage. Most lizardfolk have evolved to tune down its most vicious effect.

When below 25% HP, you gain 5ft of movement and a +1 to damage rolls.

The sense of a lizardfolk is unparalleled throughout all the mortal races, able to sense danger far before it even reveals itself.

You gain advantage on perception checks.

Lizardfolks have teeths capable of ripping flesh from bone and have claws that can tear through light armour making them fearsome foes in close combat

Your unarmed strikes gain a +1 to armor piercing. In addition you can make a tail attack ignoring MAP once per turn.

Your attack roll for this is D20 + Strength Modifier + half your level. It does D4 + Strength Modifier + half your level bludgeoning damage