Rhino: Charge
The first section of the fight he will just charge the once. The second section he will recover and charge a second time. The third section, three times. Once you have dodged the appropriate number of times, Rhino will stun himself.
Rhino: Lunk
Keep running away from the lunk, and when he finally charges, jump out of the way at a 90 degree angle to his run. Do not jump too early, or he will adjust his path.