Pig Bang 1-4/Space Eagle

Here is the strategy for 100% total destruction with Space Eagle for Pig Bang 1-4 (Angry Birds Space). Note: You must have least one sardine can to play this mode.

Difficulty
Damage the whole fortress is very easy. Some of blocks are iron, so they're easy to destroy.

Strategy
Send the sardine can between the first pig and the main structure. This sweet spot should nearly always yield 100%.