The few times I've had kangaroo it was tough and dry, even cooked blue or at least good and rare it was still fairly tough. Had some stewed once and that was better. The flavor was like a mildly gamey beef, which I liked.
It’s super lean but yeah very sensitive to being overccoked. Best marinated overnight and then really almost just seared and then rested for a good 10 min
The rooster lover is right, a good garlic and wine marinate, a cut nice like a loin, throw it on a piping hot bbq 3 to 4 minutes on one side 3 on the other, rest and eat.