This video is the part which shows what happens after you complete the Act 6 named interlude. the name of act 7 is revalation and it is the final Act of Shadow Fight 2 as far as story goes
The Gates of Shadows are revealed to be a portal, and Shadow is transported to a technologically advanced, alien-like world: Shadow World. The inhabitants of the world are alien-like creatures from many different worlds and planets, all brought under Titan's control after he conquered their worlds.
Act VII is set in Shadow World. It is the most unique Act, with the enemies being aliens and robots rather than humans. The equipments in Act VII are technologically advanced.
This all starts with a fight against Shroud and this is also included in this video
shadow fight 2 after interlude (Act VII Revelation)