I just got done with the barbarian boss and I still didn't have the Bow And Arrow. But when I went into arena mode he had one. Does he not get one in the main game? 

is there a way to unlock him without buying alien hominid hd

I don't know. I just bought the game and saw that I had him unlocked so I decided to play as him.

Thats weird, I got the bow on the second level :(

Hmm is it me or is it fething hard to play as hominid? The other knights seem to play easier. 

I started with the Hominid and was able to get the bow and arrow as soon as it was available. He does get one either way.

"is there a way to unlock him without buying alien hominid hd"