protip: get Zakana turrets. i mean, let them make up 1/3 or more of your turrets, and upgrade their "team vigor" as much as you can. the turrets themselves are very powerful, and also can take down shields nicely. but because of the team vigor, all of my turrets are operating at around 200% power.
maybe each type of monster could have a weak spot? like, the mouths, or the eyes? just something to make the game more manageable when there are 50 different tentacled beasts trying to f**k your a$$.
bosses are a little weak. i know there are many of them and it's a normal occurrence in the game, but maybe there could be bigger bosses, or maybe different worlds, each with a different boss?
also, weapon upgrades?
and more level-ups. :)
it's a damn good game, though
i don't know what made this game tolerable for anyone else, but i found it really difficult. by the time the missile trucks came on day 5, i had no shields and 10% armor. shields are 100% useless because, by the time they start recharging, something hits me again, and they have to start back from 1%.
please make a fix about letting you drop guns. i just died after 2474 kills and i was doing fine, but i had a MFG and a purple got too close. or do some sort of melee-with-a-gun thing.
note that, because of the camera angle, that you can see further looking towards the top of the screen. so i recommend staying at the bottom of the map, where you can still see your enemies at greater distances.
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I have something in mind like this for the sequel.