@god-2-0, on Dec 4 2006, 08:19 PM, said in help with forest boss:
I used the following tactic: Take out the two side-things as quickly as possible, then positioned myself right in front of the central eye thing and spammed missiles and super pellets at it. Took around 4-6 seconds, then it was dead. Ignore the beetles and shrapnel globs unless they stand in your way of hitting the boss.
I believe I had 15 or 20 missiles at this point, which makes spamming them easier, but 5 should be enough if all hit.
On my last run, I had to beat the boss with five missiles, a regular beam, and 100% health. It took awhile, but it is very possible. Although for this boss regular beam isn't much worse than super beam, since I tend to stay close to it anyway. I actually suspect that the regular beam does the same damage as the super beam.