Alright (most threads are YEARS old on this now) I am taking a new stab at Jets'n'Guns (and recording my failures for ze youtubes

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Ive tried looking up some things for Jets'n'Guns such as weapon loadouts etc. but following guides really isnt my thing, so some simple suggestions would be nice.
I had the hardest time on level 2 for a while, but managed to beat it, and after changing a ton of loadouts, ships, etc. and general fiddling I managed to get much farther now (im at the...Borg mug type thing)
Using pretty much maxed out Radiator, La Fontaine, Homing Missile, and Auto-track (for those pesky spacemen) and it seems to be working pretty good, but even so much as nicking 1 single enemy ship seems to just be absolutely devastating to mine. Bullets are actually laughable in comparison to the amount of damage walls/buildings/other ships are when they touch you.
Weapon and armor loadouts are not a huge huge issue for me, im just wondering which of the secondary purchases are worth getting early on (I got the Atarix and Carnage TV thing) but with the new ships you get alot of new variations like nano-heal bots and mission/boss meters etc.
Are these very useful or should I just save all my money for amping the damage of weapons and eventually maxing hull integrity?
(also if you want to watch any of my shit-tastic commentaries, my channel is just
Chronologix