A +2 and a +1 to 2 different ability scores

When flame monkey's HP is equal to or below 1/3, it gets a +2 to all damage rolls.

Flame monkeys start with a climb speed equal to their movement speed.

Twice per short rest, when you make your first attack on your turn, you can decide to flare blitz. This gives you advantage on all unarmed strike attacks on your turn and changes the damage type to fire, but all attacks made against you until your next turn have advantage.

Twice per long rest, flame monkey can use fire spin. As an action, chose 1 creature within 60 feet to make a dexterity saving throw. On success, they take 1d4 fire damage. On fail, they take 1d4 fire damage and are trapped in the vortex, reducing their movement speed to 0. At the start of their turn, the creature takes another 1d4 fire damage, and then can use their action to make another dex save. On a success, they escape the vortex and their movement is restored.

3 times per long rest, when you're about to be attacked, you can use your reaction to make an attack action against your attacker.