I saw a 2500 point game between lizardmen and chaos warriors. It turned into a massive scrum. Chimeras and gorebeast chariots backed by a couple units of (unmarked) warriors. Included one killy chaos lord on gorebeast chariot.

Chimeras had breath weapons and regeneration. Flaming attacks are useful in your army, and some characters should take ward saves against flaming attacks.

Armies with lots of monsters and chariots will focus on small sections of your army and try to roll up your flank. Look for ways to break up their line of advance and engage their elements separately.