I struggled to find exactly what would be needed to fight the Alpha so I decided to do an experiment run with tames I didn't really care about. I had 18 rexes, 100% imprinted and with 29k health and 1k melee without any levels. Leveled their melee to about 1.4k then got bored, I also didn't make sadles, cuz test run. I brought a yuti with 10k stam and a pig with 80k food. In the end we got the boss to about 1/5th health before being wiped out. Pig made literally no difference. And definitely do not do it without sadles. I'm gonna get 50k health and 2k melee on my rexes and try again, next time with sadles with 60 armor and no pig. Should be able to beat it with some casualties then

More Megapithecus Encountering Tips