A fantastic shoot 'em up experience, simple to get into for beginners to the genre yet with a lot of mechanics that allow a good player to excel.
An interesting layer of depth is added through the flash shield mechanic which allows daring players to get in close to enemies attacks and deflect them.
The level design is incredibly creative and both the music and art are brilliant.
Overall I'd definitely say it's worth a try, for both fans and newcomers to the genre alike.