hahahhaha it's very funny! But there's a bug! In the first part I can jump on a dog and go in the area where I should go only with the double jump... and he's blocked... so nice design!
The title of this postman game is contradictory. It seems that if you get power-ups while killing a bunch of angry rat-dogs, first the bazooka, second the double jump, third the weapon is more powerful, and lastly, quakes hit the ground.
Chrome: https://chrome.google.com/webstore/detail/free-games/gechcfjojodafcpggkekfkkfpjacenno
Mozilla/Firefox: https://addons.mozilla.org/firefox/addon/indie-games/
Opera: https://addons.opera.com/it/extensions/details/free-games-2/
Click and Play!