Alpha Megapithecus defeated!
The fight was actually easy...
I used 18 fully imprinted Rexes 30k+ hp and 1100%+ Melee with MasterCraft Saddles(71% saddle armor). 1 imprinted Yuty 30K HP and 5k Stamina
And a Daeodon who later at the end literally died...
Glad its parents is still with me so I'll imprint another one for the Alpha Broodmother fight!