The 2 new levels are great, I was a little caught off guard by the difficulty spike - those Minotaurs are terrifying. Rocked the Vulcan, Smoke and the new Spiders (they're goated) on every level except the 2nd.
One question though, how does rank get calculated? Is there a formula? I've always thought it was about getting 0 hits, but only got an A+ on the last mission.
PS: After reading the comments and trying out the laser - yeah it's pretty busted lol.