Maybe it's just cause I'm older, but when I hear 360 attack for an arcade game I always think of the movie "The Last Starfighter" where I think the best example of a limited 360 attack exists. Not that it has to be quite that extreme, the main point is that it got the job done and was useful. The 360 attack here has so far failed to even hit anything as far as I've seen.
Also, if you hype up the tank's ghost mode so much, put it on a recharge, not as another limited use pick-up item.
Yeah... tried the free play 5 times in a row now. So far despite being a run stuff over build at first (since hey, not seen that feature as an upgrade in these types of games before) and I still have yet to last more than 3-8 seconds. Free play should not start you out surrounded by enemies that can one shot you and fire multiple homing rounds, rather use the system similar games use, having like a "level" to it which goes up with time and determines how powerful stuff can be. Also, encountered same one shot kill w/o losing any health bug as Izmejojo when backtracking for more money.
Love the weapon maker and upgrade stuff, free play seems to need some work, I can't seem to last much more than 5 secs before I wind up thousands in the negative for HP and I already went for a pretty defensive tank. Something about that huge battleship enemy spawning on screen with me pretty much every time I try to play it...
This game had so much potential. To fix it up I'd say take the ideas from DragonArcherZ, and add in these other fixes.
1. Give us a guard button, and/or fix kick so it's a fast interrupt. I've got a sword for damage, give me a useful kick attack instead of what it is now.
2. Knock back should be on weapons, maybe even just some of them once leveled up, not on the kick.
3. Controls need some work, my character doing the action I'm pressing the button for shouldn't have the same chance of working as a coin toss and I hate getting hit because instead of turning and attacking my character just attacked facing the wrong way.
4. Fix up the attacks, for example the down + attack. Do not, repeat, DO NOT make me attack a different direction every other attack AND wait for it without it either being some effect of a specialty weapon or something and informing the player BEFORE they wind up finding out as their character swings at nothing behind them with multiple enemies in their face.