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