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