Here is the full list of all 25 Legendary Eleven: Epic Football achievements.
Win World Cup
Win the World Cup with USSR
Win Europe Cup
Unlock 16 stickers
Do 25 successful dribbles
Win 25 games
Win America Cup
Win Asia Cup
Score 50 goals
Win a game in the last minute
Unlock 10 stickers
Win Africa Cup
Do 3 substitutions
Score 1 penalty goal
Score 1 own goal
Get 1 Player Expelled
Win your first game
Win 100 games
Finish 100 games
Score 500 goals
Perform 100 Super Shots
Do 100 substitutions
Score 20 goals with a bicycle kick
Unlock 24 stickers
Unlock all 32 stickers in the game