Okay the vandal game is REALLY stupid. The entire time of the game he's insisting he needs 200 dollars, no matter what you say he needs 200 dollars and there's a whole spiel about it. Any time you say anything like you're not going to give him the money or that you think he should do something on his own to get a job besides begging for money, he kills you. But you offer to buy him coffee and a donut and he acts hurt by the suggestion, then when you go ahead and do it, you expect him to get pissed and kill you, but instead he blesses you and kisses you for your kindness.
I think after all the time spent 'negotiating' for 200 dollars, he wouldn't actually be happy that you bought him a donut. Considering you go to the ATM and take out 20 bucks to buy it for him (the only reason [which I can think of] for that being that you don't want him to know you have any money on you), I think he'd kill you for the 20 dollars.