My colleague defeats me with the same tactic everytime...

Hi everyone,

I am a beginner AoE2 DE player with a very little knowledge. My colleague and I have been playing this game for a while and for 1v1 (arena) he always picks Huns and builds a castle right near my border during the castle age.

I tried fast imp with Turks but was too slow to prevent him building that castle and military base around my walls. I ended up losing too much time to get his castle and while I was tackling with the castle he boosted his economy :/

This is the way he always plays the game. Is there a specific tactic that tackles easily with Huns and this castle thing? What is the risk of building your castle right next to your opponents wall, it seems like a tactic with no disadvantages.

Any tactic and tutorial advices are welcome. Thanks.