Finisher: to do a finisher you must get your opponents health very low. Then you When they are not gead but really weak and cant attack you. Then you press the fists, webs, siths, guns, etc. Then you see the another fist blinking. Keep pressing them until you see your player killing your opponent in a red haze. That is a finisher.

This are the best characters in the game. From those people you can unlock others. Well that should help you a little bil with the game. By the way , Wolverine or Human torch unlocks The Thing on a story and Human torch and Spiderman are the best charachters for beginners.

When in Arcade or Play Now mode, you can finish your opponent off with an awesome finishing move. Get your opponent's health down very low, until the two "fists, webs, electric balls, syths, etc." on the touchscreen are blinking. Hit the one that is blinking, then follow up by hitting the other one (only once). You should see your character killing your opponent in a red haze.

Note: This trick may not work on some of the characters, but is effective against Elektra, Dare Devil, Human Torch, and Spider-Man.