When fighting him, just go without Guardian of Mana until you have around 400 HP, then switch to him, shoot, then when he shoots those diagnol bullets, go to middle, aim left or right, and use a Mega Blast (not sure if i listed it in skills but Mega Blast Vll) and 1 half should hit him, then go to side and use Psion wave, when your not Guardian of Mana, and have 400 HP use Energy boot then change to him, i suggest using the equipment - Bonus Amplifier... Easy if you dont get shot with the mega bomb he launches - free tip on Risktaker acheivment, when Guardian of manna, and have sheilds, get hit by the mega bomb, damage absorb it, get hit, damages abosorb, do this 5 times, easiest way, just got to beat him again, if you want to do this the easy way and have beaten him :P
wahhhhhhhhhhhhhhhhh :( for some reason my save file was deleted i had everything boss world legendary key all the ships and a beat game with awsome stuff but it just disapperad
go to http://www.kongregate.com/forums/3-general-gaming/topics/81610-enigmata-2-genus-revenge-full-walk-through#fn1/?gamereferral=enigmata2 it really helped me