Here is the full list of all 34 Power Rangers: Battle for the Grid achievements worth 1,000 gamerscore.
Fight in 1000 online matches with any character
Fight in 1000 Ranked matches with any character
Reach player level 700
Win 500 Ranked matches with any character
Fight in 500 Ranked matches with any character
Fight in 500 online matches with any character
Fight in 200 Ranked matches with any character
Reach Master League
Win 100 Ranked matches with any character
Reach Elite League
Reach player level 300
Fight in 100 online matches with any character
Reach Diamond League
Reach player level 125
Fight in 30 online matches with any character
Reach Platinum League
Reach player level 50
Complete Arcade mode with Kat Manx
Complete Arcade mode with 9 characters
Complete Arcade mode with Magna Defender
Win 10 Ranked matches with any character
Complete Arcade mode with Ranger Slayer
Complete Arcade mode with Goldar
Complete Arcade mode with Tommy Oliver
Complete Arcade mode with 5 characters
Fight in 10 Ranked matches with any character
Reach Silver League
Reach Gold League
Reach Bronze League
Win 1 Ranked match with any character
Complete Arcade mode with Black Mastodon Sentry
Complete Arcade mode with Lord Drakkon
Complete Arcade mode with Gia Moran
Complete Arcade mode with Jason Lee Scott