Honestly, reading the Hints/Tips available in game helps (it pops up in a new window) But other than the 3 spread weapon early on, I found the Lazer Lock and 4 Homing Missiles to be the easiest to use. No need to aim so you can focus on dodging bullets/enemies. And don't always go for the money. If it's clear get it, if not, just keep dodging enemies. It goes against what most people are used to doing but if you're playing for the achievement you have to break that habit.
"so ive been playing for a while and i got a good base but im searchig for more rare units like the legend/lightbringer and the x-zac assimilator."
X-Zac is a 2mil upgrade for the Zac assimilator. May have to max it's level first before you can upgrade.
How can I make sure I kill all the enemies? I always get a disproportionately low score on "enemies killed", which stops me from getting the achievements :("
Get the taunt ability.
A good game but not as good as Icy Gift. My biggest problem was the lack of the powerups preset into the level. When it came down to it, it was less about timing of your explosions to hit the most floes and instead, "Fingers crossed I get a lucky spin" The jackpot making the round just too easy, and the extra fish/money being pointless after you've upgraded everything.
For everyone complaining about your game being deleted, it's not Berzerk's fault, your game is being deleted because you (or your browser) is deleting your cache history. Best thing to do is find where your flashplayer data is getting saved to and make a copy of it on your desktop. Every time you go to play copy the desktop copy into where you first found the flashplayer save. After you finish playing make sure to copy the new one back onto your desktop or you'll lose your most recent save.
Definitely needs a quality button. Just having that overhead santa thing cuts the performance a lot and when you lag you end up missing so many notes the game becomes almost unplayable. While it's an interesting concept for a flashgame, performance > gameplay
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