Unlock the following characters by performing the corresponding tasks:

CHARACTER - HOW TO UNLOCK
Black Cat - Beat Toyko level 1.
Blade - Beat Transylvania level 2.
Doc Ock - Defeat him in Tokyo level 2.
Green goblin - Defeat him in Tokyo level 4.
Iron Fist - Beat Tangaroa island Level 3.
Lizard - Beat Cairo level 2.
New Goblin - Beat the game.
Rhino - Defeat him in Tangaroa Island level 4.
Sandman - Defeat him in Cairo level 4.
Scorpion - Defeat him in Tangaroa island level 2.
Venom - Defeat him in Transylvania level 4.