I found a really weird glitch, and potential exploit. It all started after I filled every ship slot with the speed upgrade for the memes. After having a load of fun with it, I stopped by the shop in the middle of the map. Not sure if getting hit by a mine and a few cannon shots contributed to the glitch, but those both happened. I unequipped most of the speed upgrades. Then I noticed my forward and backward controls seemed to be reversed. After putting all the speed upgrades back, I could only go normal speed, but my controls seemed fixed. Then I unequipped everything, and noticed that with each speed upgrade I took away, I got much slower, to the point where I could barely move after removing a couple. Then I started going in reverse, despite still holding forward. Then by the time I unequipped everything, I was going ludicrously fast backwards! If I had to guess, the reversed controls might be because I somehow got reset to normal speed despite having all the speed upgrades equipped, and unequipping them put my speed into the negatives.