LEGO Marvels Avengers
65 Achievements
1,500
Xbox 360
A Sticky Situation
Complete the 'The Masters of Evil' level
20
How to unlock the A Sticky Situation achievement in LEGO Marvels Avengers - Definitive Guide
This video is not mine, but this is a great walkthrough for the level:
Story related and cannot be missed.
Simply complete the level. Here's a quick cheat-sheet for those not familiar with the characters:
Radioactive Man: Electricity, Strength, Scanning
Melter: Explosives, Electronic Panels
Black Knight – Ropes
Baron Zemo – SHIELD Panels