Fun wee game.
At first I thought it was a bit shallow and generic, but when going after the Untouchable medal I learnt a lot of tricks and it turns out there's quite a lot of strategy required. At first I thought it would be really hard, but I got the medal after only 3 attempts. Just had to learn to ration my bullet time, identify and quickly destroy the most dangerous enemies, and remember to keep a look out for power ups.
Anyway, although it was a pretty short game, there was a fair bit of variety in the enemy types, and the humor added a bit of fun as well.
Only thing that I felt was missing was a bomb attack to clear the screen. Would have been nice to get at least 1 or 2 of those, since you don't get any breaks in the action.