Here is the full list of all 13 DELTAZEAL achievements.
Great laser beam!
Here come the RAPID series!
Wide shot is the best!
Submarines everywhere!
Nothing escapes homing!
Tanks ! Tanks !! Tanks !!!
DELTAZEAL All Clear
DELTAZEAL 1 Credit Clear
Black Hole bullets, what's to say.
Incoming, outgoing, trains in every direction!
That big guy gives you 10 times more points!
The fun has just started!
Playing once in a while allows you to make new discoveries.