#12 looks like a textbook Overrun attack. Evaldood can attempt to "run over" Nytin, as long as they're within one size category of each other. He starts the attempt by Charging (moving at least 10', up to 2x his speed, in a straight line), and entering Nytin's space.
Evaldood provokes AoO as he comes in. Regardless of whether that hits, he gets to makes one Trip attack with the +2 charge bonus. If he succeeds, Nytin goes down and Evaldood can move on, up to the limit of 2x his speed. Unfortunately, since Overrun is a full-round action, he can't also close the door this turn.
If the Trip fails, Nytin gets a return trip attempt. A success knocks the baddie prone in Nytin's space. Even if the return trip fails, Evaldood is still blocked; he gets knocked back 5' in the direction he came from, and his movement ends.
(Of course, this assumes that the do-gooder is attempting to block the doorway. If he chose, he could choose to let Evaldood move through his space and continue on. He'd still get to take the AoO for passing through a threatened area, though.)