Konami code in triggers?

I am trying to add the Konami code into a map and am having trouble on how to do it. How do I make a trigger check for multiple events before making the action? For example a player entering up, up, down, down, left, right, left, right to make an effect. Is there also a way to change the keyboard event to react to a button press other than the arrow keys?

I wouldn't use keypreses since they are glitchy on multiplayer.

You can try some sequence of unit moves, I dunno

Can't you detect specific key presses in Dialogs?

the arrow keys and the esc key are the only ones you can detect... it COULD be possible to detect the numpad by using items but i wouldn't recommend it