Off Topic:
-Yeah I was about 9 years old so maybe I was just trippin' Ballz.
On Topic: The idea just seems, retarded. Abe is like defenceless, all he can do is run around and jump up walls to avoid any contact with bullets. Stranger, on the other hand, is quite smart..? I'm sure instead of just assuming that hes gone because he jumped up a wall (Like a slig) he relises he can just use his Furry shooter cannons to catch him

The game would be over as soon as he found Abe. Playing as Abe would be like:
Start game, run for about 6 seconds, then.... OMFGosh STRANGER!!!1!! Caught, Stranger gets bounty, game over. Good work.
I don't think them working together would be such a good idea either.
"Ouh STRANGER! Ur BIG Muscular ARMZ!!!1 Wtf. U HAz 4 LeGz O_o??" "Piss off Abe, I'm lonely and depressed..."
Your point, is invalid.