Progress, Made a whole bunch of my upgrades actually work, I worked on bombs yesterday so today i made some rockets as well as a bunch of other dps and survivability upgrades that were relatively easy to implement. I just grabbed a few of them (later you'll only get one per level). and then went into the level to test them out a bit.

What's neat about the rocket upgrades is that there's 3 of them, one that has high ammo, one that explodes on impact doing an aoe explosion and one that homes in on target, but if you stack the upgrades in any order you get the best traits of whichever rockets are equipped. the homing missiles automatically track the enemy with the most health on screen.