Here is the full list of all 36 Tony Hawk's Pro Skater 1 + 2 achievements.
Create a new park and upload it.
Spend $10,000 in the Skate Shop.
Earn the "Rookie " Challenge Collection.
Find all Stat points for any Pro Skater.
Unlock Officer Dick.
Earn a score of 10,000,000 in any park in a 2 minute session or single combo. Game Mods must be disabled.
Complete every goal in THPS2 Classic and gain all gold medals.
Get hit by the Bull in Bullring.
Unlock Bullring in THPS2 Classic.
Earn any 4 Medals on competition parks in Tours.
Land a 1,000,000+ point combo.
Achieve a High Score of 1,000,000+ on any classic Park.
Unlock School II in THPS2 Classic.
Complete every goal in THPS1 Classic and gain all gold medals.
Achieve a judge score of 99.9 on a competition run.
Unlock Roswell in THPS1 Classic.
Bail a 100,000+ point combo.
Break 20 Panes of Glass.
Earn a Medal on any competition park in Tours.
Reach Career level 10.
Unlock School in THPS1 Classic.
Create a skater using the CAS system.
Find every alien plushie.
Complete a match in multiplayer.
Get hit by a vehicle on every map that features them.
Earn the "Veteran" Challenge Collection.
Earn the "Legend" Challenge Collection.
Complete all "Hard" Get-Theres.
Reach Career level 100.
Paint 100 surfaces in Graffiti across all playtime.
Give 50 Letters in Horse.
Land a 50,000+ point combo.
Complete all Gap collections.
Place 500 objects in CAP.
Earn 5,000,000 points in Trick Attack across all playtime.
Earn 2,000,000 points in Combo Mambo across all playtime.