I agree with the first part of Richiev's comments. Save the word count by omitting anything that is unneeded. We don't need to know he stumbles to a trailer park because you can just put 'asks for help from residents of a nearby trailer park'.
However what the character wants, I presume, is help and his obstacles are that the residents won't help him. At the midpoint if his character goes through the transformation his wants become to kill the residents for not helping him and them fighting back is his obstacle.
The logline still needs work and it is a tough one to work on due to the complete change in the character but I think you need to hint at both and keep an outright goal which remains present throughout the film. It starts as wanting help, then killing the people but deep down what he really wants is to survive/make his delivery/evade capture etc etc.