In "how to play" it says "Use your points to upgrade: Health, speed, damage, rate of fire and range", but where are the freaking health and range upgrade?
what a horrible tedious game... bugs everywhere, in level 3 the boss may disappear and you have to restart, in level 4 I killed 199 enemies and wtf there're no other enemies at all! where is the freaking 200th enemy? 1/5