This game is encouraging unacceptable behaviour. [Story spoilers]

The 4 tribes thing is something I always think about. What if we'd found a different camp first?

Main act 2 multi-quest arc -- Kill the four miscreants and take their treasure:

Yeena's 'magic medicine'
Greust's 'spear'
Silk's 'spike' (which he's stupidly lost, so you have to go negotiate with the local arachnid community, who have long been on good diplomatic terms with Alira anyway)
Eramir's 'cube'

Distribute the treasures amongst the other kindly leaders of the camps and get a passive skill point.

While they're celebrating, kill one of the leaders and take over their camp:

Alira: to be killed while experiencing 'dreams' on Yeena's medicine

Oak: distracted while admiring Greust's spear and the curious fact that it has a blade on the end, making it SO much more effective than a stick...without a blade on the end

Kraityn: exhausts himself Flicker-striking around with his usual sword in one hand, Maligaro's Spike in the other

Alternatively, you can simply open Eramir's Cube, unleash Hornhead and sit back laughing as a giant red demon devours them all.

Either way, you now have your own camp to rule, with underlings to bring you food, service your EVERY need. Congratulations, Exile, you've graduated from 'stupid wanderer heading into danger at every turn' to 'local badass lord.'

Epilogue: Die of old age, very happy, in bed.

Best part is, GGG wouldn't even have to make an act 3!