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