Auto Turrets blow, mines dont go off, you dont make enough cash from kills, restore health costs too much for the amount of health it heals and increasing your health costs even more than its worth. 1/5 but I will keep playing this till I get the achievement that it doesn't deserve.
Phew I'm glad that's over with. I had a knack for getting a good opening for the kill almost each level then getting a horrible manhole placement and not making it. Took me over 5 tries each level but it was fun.