I had made some English edits for level taglines but never posted them before. Then I saw that the developers were interested in improving their language localization and figured I might as well share them.
Most of the level tagline edits are simple grammar improvements but additional emphasis (!) on some of the taglines could also work well. For the skin taglines I was impressed with some of the jokes in the English localization but I recall some of the grammar being incorrect as well so I may take a look at those next.
Beast Soccer
Beat the soccer into opponents' gate to win
Hit the soccer ball into the opponent's goal to score points
Beast Football
Carry the ball into the opponents' gate to earn points
Carry the football into the opponent's endzone to score points
Beast Hockey
Beat the hockey into opponents' gate to earn points
Hit the hockey puck into the opponent's goal to score points
Fast moving hockey can knock you out
A fast moving puck will knock you out
Shields can deflect incoming hockey
A shield can be used to deflect an incoming hockey puck
Broken Arrow
The plane makes rapid descends from time to time
The plane makes rapid descents from time to time
Lollipop Factory
Carry candies back to base to earn points
Carry candies back to your base to score points
Safely Afloat
Take the balloon safe back to base to earn points
Take the balloon safe back to your base to score points
Other
More stamina you have, more damage you deal
The more stamina you have, the more damage you can deal
Weapon Challenges
Knock out X opponents with [weapon] in total
Knock out [X] opponents with the [weapon]
Weekly Challenge
Refresh in [X]H [X]M
Refreshes in [X]H [X]M