Here is the full list of all 22 SkyScrappers achievements.
Complete all the single player campaigns
Complete the single player campaign as Jessica
Complete the single player campaign as Solene
Do a special move jump
Do a slide trick
Complete the single player campaign as Kichirou
Win a game without losing any health
Complete the single player campaign as Phileas
Hit an opponent with a ground pround attack
Do a jump of over 15m from an inclined platform
Win a game by landing on the roof of a building
Do a long jump trick
Win a match for the first time
Strike a flaming object into another character
Win your first round
Finish a game with a weapon attack
Do a special move attack
Completely fill your super bar
Strike a falling object into another character
Do a vertical rush trick
Do a three point landing trick
Complete a four-player multiplayer game with all human players