@heavyrail
I gave a look yesterday, and was not able to get above 86% with only one can + one bird. My most promising strat:
1. Aim at 7:30, activate sardine can on impact with crystal planet on which sling lies.
2. If you activate very close to planet, you should break it. Initial direction of can does not seem to make a huge difference (although sending it at 4:30 seems to give less interesting results than at 7:30), but activating as close as possible to planet surface does.
3. A large shard of the planet should slowly drift to the right, and get sucked by small planet gravity field, which should destroy everything there.
4. In the meantime, a small debris from large blown planet should fly north east toward crane, destroy crane and pig on scaffholding. Timing of sardine can shot is probably crucial to increase odds for this.
5. The rest is a matter of debris from small planet being able activate TNT explosion, thus allowing to finish the level with one can and no birds. My bet is that should give you 100%, but you would need to waste many cans in order to do it. It is no longer an issue with daily missions, but still, it is a waste.
