Here is the full list of all 46 Tony Hawk's Proving Ground achievements worth 1,000 gamerscore.
Play 1000 games.
Win enough wagers to accumulate $100,000 in winnings. Ranked Match only.
Won all rounds in a five round match vs. at least 4 gamertags.
Found all the cash spots.
Found all Gaps on gap list.
Completed all Line Goals at SICK
Completed all goals at PRO ranking or better.
Completed all goals at AM ranking or better.
Completed all Hawk-man Goals at SICK.
Completed all Hawk-man Goals at PRO ranking or better.
Completed all Hawk-man Goals at AM ranking or better.
Completed all Classic Goals at PRO ranking or better.
Completed all Classic Goals at AM ranking or better.
Completed all Lifestyle Uber Goals.
Made a Video Edit worth 20,000 Points
Upgraded all skater skills.
Modified all environment areas.
Completed all Line Goals at PRO ranking or better.
Completed all Line Goals at AM ranking or better.
Complete all Film goals at SICK
Completed all Film Goals at PRO ranking or better.
Completed all Film Goals at AM ranking or better.
Completed all Photo Goals at SICK
Completed all Photo Goals at PRO ranking or better.
Completed all Photo Goals at AM ranking or better.
Complete all Skill Challenges at SICK.
Completed all Skill Challenges at PRO ranking or better.
Completed all Skill Challenges at AM ranking or better.
Purchased all Skater Gear.
Achieved 'Team Built' Game Milestone.
Lance's Bowl Skating episode completed.
Dustin's Skate Checking episode completed.
Stevie's Nail the Manual episode completed.
Bam's Climbing episode completed.
Daewon and Rodney's Modify the World episode completed
Jeff's Rigging episode completed.
Bob's Nail the Grab episode completed.
Arto's episode completed.
Achieved 'Build Your Team' Game Milestone.
Mike V's Go Epic episode completed.
Achieved 'Get Your Own Skate Shoe' Game Milestone.
Achieved 'Get Your Own Skate Deck' Game Milestone.
Knocked baddie 150 feet.
Achieved the 'Join Team' Game Milestone.
Achieved the 'Sponsored' Game Milestone progress.
Complete all Classic goals at SICK