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