"Don't let up!"
Alright, that Accuracy drop will be quite annoying so let's deal with that, let the Smokescreen hit and then use
Mist, this will get rid of the accuracy drops and if you open up your eyes real wide in the mist you should be able to clean out your eyes with the water droplets. Then use the mist as a cover to fire a
Surf at Charmander and finish with a
Scald from the cover of the mist.