Invasion canceler
They have to be completions on maps which you have not yet completed the event before.
But at least Portal Invasion Closer Achievement doesn’t say that you must be in 5 diffrent maps. It says to participate in 5 invasions!
I believe with all the invasions you have to participate in enough portal closes (be present at the event end when a portal gets closed successfully). I feel like the number is 5 but not sure where i got this from. Ultimately, this will allow the achievement to tick even if the invasion event runs out of time and fails. Sadly during my normal play hours it is off time for most servers so i have not been able to see invasions to success but I have gotten ticks for all invasions i have done.