There would be some solo missions.
These missions must be special and unique,for example: Protect the villagers untill the time runs out.
After many of these missions,there could be a last boss chain,like Firestorm Citadel,called: Dr.Sreew's Surveillance
Depth ??? (1ST): Cross the bridge to the Headquarters! (Bridge must be over a huge river,boats must throw misiles,gremlins with electrical sticks.
Depth ??? (2ND): Make your way to pass the Headquarters Surveillance! [In a room(there must be many diffrent traps,and hardly-defeated guardians)]
Depth ??? (3RD): Escape from the exploding HQ,save the village! (Escape from the explosion,TRAPS,run to the village and protect the villagers,5 MINUTES)
Depth ??? (4TH): Find and bring the civillians back to the Haven from ruins! (Location: Haven,civillians in haven must be saved,Dr's ENEMIES SENT)
Depth ??? (5TH): You have been caught and you must escape from the jail! (Escape from the jail,defeat Dr.Sreew in his giantic robot armor)
Rewards: Double electrical sticks (5 STARS SWORD,CAUSES SHOCK),Prisoner (5 STARS GUN,THROWING ROPES,BLOCKING ENEMIES FOR 3,5 SEC,DMG)
Dr.Sreew,Boss Battle:
-Huge hammers on his robot body,causes stun and wastes much energy,hammers connected with cables that get from the body.
-Prisoner gun,blocks Knight for 3,5 SEC and takes a lower damage (STILL NOT LOW).
-Ground cables-like from the Ghosts in the Machine,but they're not destroyable,harder to dodge and attacking PLAYERS ONLY.
-Minions,rapidly spawning,very fast and very mighty attack,causes shock on a player.