Robert realized his mistake. Doru took a quick flip barely hitting his wing on the wing, as the enemy Digimon jumped off the wall at blinding speeds and tried to stab at them once again causing Doru to dive down, in indoor areas like this a large flyer like Dorugamon was the enclosed space didn't give him enough room, however, he wouldn't be able to fight him properly if he didn't digivolve Doru. So, not the best situation to say the least especially since they didn't want to damage what was on the other side of that door. 

Doru looked at the Digimon, he didn't recognize it. He didn't know if it was part of the army, there was something odd about the Digimon. Doru was knocked out of his thoughts as the Digimon attempted to strike at them, which he leaped back to dodge however the Digimon left a gash as it gazed him once again. This was getting on his nerves. He fired three cannonballs at the Digimon, though the only thing it hit was the left wall leaving a scatter of dust. Doru clicked his teeth, however, Robert spoke up.

"Doru I think I got a plan."

To which Doru responded with.

"Oh you think you got a plan?"

To which Robert responded with.

"It's either that or we keep up this game of cat and mouse."

Robert leaned over and started to detail his plan to Doru.