This is what I feel Slade . would be doing with his revenge.
I don't own Arrow or any other characters mentioned in this story.
He sat there, plotting his revenge for what happened to him and his son, Shado, the man he once was. but he needed to bust out of his cell. And the only other person on the island was believe it or not, a former member of his old unit from asis. He was not a fool though, Digger was more than a little savage. But then again, so was he.
Slade stole some of the guard's radio equipment from his first escape attempt, knowing it might come in handy just in case it didn't work out like he wanted. The parts of the radio were useful for lock picking, and he had to be quick and break his fellow Australian commando out. It was a good thing his insanity from the"miracle" subsided enough for him to think clear enough to formulate a plan of escape and attack when trouble happened. Figuring out where Digger was and remembering the layout of the island, he traveled to the other side of the island in disguise, managing to slip past the guards and killed both young soldiers before releasing the boomerang brandishing psycho. Handing his former teammate a few grenades and a loaded gun. He looked his old comrade in the eyes and said, "Time for pay back."
It wasn't that hard to escape. Hell they pretty much handed them the plane off the island, shooting down the soldiers and removing the black box, making sure that they wouldn't be tracked.
Landing near a port by beach on Sydney. Finding an old asis safe house loading up on supplies, getting ready for war.