How do you unlock this feature?
Please be as detailed as you can when making an answer. Answers that are too short or not descriptive are usually rejected.
Please do not use this box to ask a question, it will be rejected - this box is for answers ONLY. If you want to ask a question for this game, please use the ask a question box which is above on the right.
Accept submission terms View Terms
You are not registered / logged in.
If you would like to ne notified if/when we have added this answer to the site please enter your email address.
We will only use this address to email the confirmation for this answer.
Collect the dungeon card in Mission 5 and then complete the mission. Then when you go to the 'Select' screen the extra mission called 'Dungeon' will be available to the top left.
Search for more answers for Metal Slug Advance or ask your own question here.
You need to go all up in every door and shoot the barrel in the final mission (aka Mission 5)
It will give you the Dungeon Card then the mission will be unlocked