Yo!: welcome to my Young Justice: Legacy video walkthrough\guide. This is the first time I've ever published a guide on steam so please bear with me as I update it and try to make it good (^_^)
Format: There is a total of 15 main missions, each is divided to 2 or 3 missions\sections. I divided the missions based on the area they are located at. For example: missions 1, 2, and 3 are located in Greece so they have their own section.
BOSS FIGHTS: If you are only interested in watching boss fights, go to the last section which I dedicted solely for them.
Mission 15.1 (Bialya - Tiamat's Well I ) Boss Fight: Tiamat - Fight #1
Mission 15.2 (Bialya - Klarion's Chamber ) Boss Fight: Klarion and Blockbuster
Mission 15.3 (Bialya -Tiamat's Well II ) Boss Fight: Tiamat - Fight #2
Mission 15.4 (Bialya - Tiamat's Well III ) + Ending ; Final Boss Fight: Tiamat - Fight #3 How to defeat the final boss: Do you see the yellow bar under each character's picture ? you should fill up the yellow bars for all characters by killing the small enemies poping up around (it takes two enemy for each character to fill up his\her bar), after you fill the yellow bars completely for all the characters you press Q so you can activate the ultimate power up for all characters at the same time and you keep doing so till you finish off Tiamat.
Defeating the final boss: Do you see the yellow bar under each character's avatar? you should fill up the yellow bars for the team by killing the small enemies poping up around (it takes two enemy for each character to fill up his\her bar). Once all the yellow bars are filled, press Q to activate the ultimate power up for all characters at the same time. After doing so, Tiamat will drop and you will have your chance to deal damage. Keep repeating the same thing over and over till you get him.
NOTE: If Tiamat stops spawning enemies you should restart the mission.