Sky Force Reloaded

This and B1 are "bonus" stages that are tougher than the traditional levels. Similar to the other Insane achievements, this achievement has the following requirements:

- Complete all 12 medals of Level B2 through the Insane difficulty

To do this you will need 4 medals on both Normal and Hard to unlock insane difficulty.

In general, I found this level to work best in two separate runs.

Run 1 - Acquire the Civilians and No Hit Medals

Run 2 - Acquire the 100% Kill Medal (and technically 70% Kill)

For the civilian/no hit medal, I still kill quite a bit on the level. I did skip a number of enemies. In particular, I didn't worry about the 5 giant missiles during the first half of the level. Additionally, I skipped the helicopters that shoot missiles upon being destroyed. Not killing them means nothing extra to dodge. I usually bought a few extra shields for this run to be extra prepared.

For 100% kill, I needed to stock up on missiles and lasers. The lasers were the big part of this. For the giant missiles that launch off screen, I could only really kill them with a laser consistently. I could get one or two without it, but it becomes really hectic when the spider tanks are also on screen. Lasers will save some trouble. The bombs became really handy when dealing with some of the trickier enemy arrangements.

For the missile helicopters, the Octopus ship really made a huge difference (combined with the charge attack card). By charging my attack, the missile pods I fired off were a lot safer than trying to dodge through their odd missile pattern (go off screen and then come back up from the bottom - took me a little to notice that was even happening).

A huge tip is to just play the level a few times to learn it. Knowing where the enemies appear and what they will do can make your run a lot more consistent. Getting the 4 medals for Normal first taught me how I would approach the rest of the level. After that, Hard and Insane became more about replicating the pattern a little faster.