Anyway, obviously, I don't recommend this guide for first time players. Finally, please note that SPOILERS abound.
But ,in the first place, the dialogues are very hilarious. So why should you want to play Stupid? Well,it's a different game, less talk and more fight. Note that the game will be easier/harder if you want to steal alot or not (save first). So what can be done? The answer is to farm encounters around every city in World Map until you're happy with your level.
YES NOThat being said you'll level very slowly and with few Skill Points and as you can't talk away various dangers the battles can be very difficult.