Here is the full list of all 45 Spider-Man: Web of Shadows achievements worth 1,000 gamerscore.
Act One completed
Act Two completed
Game Completed
Red Suit Conclusion earned
Black Suit Conclusion earned
Mary Jane Conclusion achieved
Black Cat Conclusion achieved
All Upgrades purchased
Half of All Optional Goals completed
100 Collectibles found
50 Hit Combo “Spider Silk” executed
100 Hit Combo “Ownership” executed
250 Hit Combo “Neighborly” executed
25 City Crimes thwarted
100 City Crimes thwarted
100 Enemies defeated
500 Enemies defeated
1000 Enemies defeated
First Tech Mech defeated
Tech Mech Pilot pulled from his seat
Black Cat defeated
Vulture defeated
Electro defeated
Wolverine defeated
Symbiote Electro defeated
Symbiote Black Cat defeated
Symbiote Wolverine Defeated
Symbiote Vulture Defeated
Defeated Venom once
Defeated Venom twice
First Red Suit Choice
First Black Suit Choice
Spent time with Black Cat
Black Cat Spurned
5 Enemies Web Swing-Kicked in a single pass
20 Enemies Web-Strike Bounced in succession
Performed all three types of attacks (Ground, Air, Wall) on a single enemy 10 times
50 Enemies defeated using only Ground Combos
50 Enemies defeated using only Air Combos
Defeated 50 Enemies using only Wall Combos
Complete 60 Bonus Goals
Max Out Spider-Man
Find Half of all Collectibles
Parry then Counter Attack one enemy
Parry then Counter Attack 100 enemies