Use arrow keys to move, and dodge the various attacks thrown at you. Try to survive as long as possible. In this version, you can summon bosses, by pressing the icon on the bottom left. To move through options, use the f and j keys. Press space to summon the boss. If the boss doesn't shoot, restart the project.
I made this myself, and it is original. BOSS DESCRIPTIONS: Spikeminster - Pretty easy, just stay a bit away and avoid the spikes. Sawarrior - Stay away at all costs, don't worry too much about the mini saw. Cannonblast - Keep running in a circle, and you're good GAMER'S Creation - Inspired by GAMERI68O, stay away and avoid the hammers Ringmaster - Seems tricky, but look for gaps in the rings and don't get close Insurgent - Keep running and watch out Armorship - High damage, stay away and avoid the busters near the edge Impaler - RUN, don't dare touch it, don't worry about projectiles Portal Swarmer - Look for gaps and don't get hit too much Ultima - Starts out cyclic, don't go too far from it. True form... well...