Darius is a very very agressive top laner. He can shut down and come back in the game anytime in the game.
I play Darius as a very agressive laner and zone out my lane and roams as level 6. I recommend roaming bottom lane with ghost because your support/ad carry will land out cc with good communication of bottom lane and top lane. When they set it up ghost in there and grab the support with your E. After farm at top lane until u feel comfortable about your farm. 20minutes in go mid and push down towers.Darius is help to all lanes if you build him correctly and play him properly.My guide will get you to at least 1600+ with just one character, Darius. I hope you find my guide or build helpful for you.I hope you all do well with my guide and it wont disappoint summoners.