Does anyone have any tips on defeating the Worm? I'm having a lot more difficulty with this one than I had with the other monsters. It seems best to Web the creatures when they're in the Worm's mouth but it's hard to figure out where the worm's going (or coming from rather) and the webbed creatures don't seem to be doing that much damage. Plus, there's been a few times where I've webbed a creature behind me rather than the one in the Worm's mouth.

It seems like the creatures respawn in this area...

He's easily the hardest of those three mini-bosses, mostly due to the infinitely respawning flipper babies. Some tips from my victory, keeping in mind that it was still pretty difficult:

- Make sure you have at least 100 green, red, and especially blue in your hearts. 100 silver won't help with the fight, but is a good idea for long-term game prospects...
- The arena is a triangle, with three holes for the worm at the tips.
- Listen when the worm moves. There will be a rumble and a roar, then a very distinct sound if he's picked up an enemy. This is important because, if he's grabbed something, it's time to run towards the hole he entered as fast as possible (to be there when he comes back out to chew). If he didn't grab anything, though, he's just going to shoot to another random hole, and you need to hide.
- If he finishes chewing when the same color is highlighted in the upper-right bar as the web you cast on the enemy, it deals double damage.
- It's easiest to run up and put the web on the enemy while he's chewing. Try to look at the color bar and time your casting based on how long it's been since the worm came out; this takes a lot of practice to get right.
- Webbing enemies before he even grabs them is possible but inadvisable. If he hits them after he's already grabbed another, it will be destroyed, wasting your color. It's also nearly impossible to sync with the color wheel this way (save of course on the final, innermost wheel, where the color doesn't change).
- Make sure you pump the maximum color into your web glyph. You can't go over; it will give back the extra.
- Sometimes the web glyph will just slide around his meal without sticking. I have no idea what causes this failure, or how to avoid it.
- Web targets the closest enemy to you. Look around before casting, if you have time, to make sure that's the one you intend to hit.
- As with all bosses, look at the innermost wheel color and refrain from using it during the first two wheels, tempting though it may be. Save it for when it's a 100% chance to crit.

All that's pretty "no duh" stuff, but it's the best I can offer. I'd say he's the toughest fight in the entire game.

On a side note, did anyone else have a problem with the color plants in the worm arena? They disappear when you get close, on my machine, and twist like there's something wrong with their perspective.

Another tip.
When you enter you'll see him grab a predator. This is the easiest hit you can get and he does it every time you enter his chamber. If you want to play it safe do this:
-Wait until the worm grabs that first predator.
-Follow him.
-Use net when he's chewing.
-Exit chamber when the worm has taken the damage.
-Enter it again.
-Repeat.
I know its not really a fair way to beat him but that thing can be really frustrating.

Bwahahah! I never even thought of that Burak, though I was certainly taking advantage of that easy hit.

Thanks for the tips guys. I've been plastered to Batman Arkham Asylum since it went on sale on Steam (here in the U.S.). I think I needed to take a break from a game whose narrative actually required some sort of thought.

I found a glitch/exploit last night which allows the worm to be killed in one web glyph.

Fill up your hearts with crimson, and when he snatches up that first predator right after you enter, run to the hole he went into. When he rushes back out he will clip through you so that you are inside him.
From this place, fire a fully charged web glyph as quickly as you can. It will get stuck on him, trying to home on the predator in his mouth. If you timed the glyph right, the web glyph will explode soon after he finishes eating the first predator, and if your hearts are filled with crimson, it will take off all of his health.
If your hearts have no crimson in them, it will still knock off the wheel entirely, but you will have to do it a second time for his palette.
If you are too slow, the worm will move before the web explodes, and no damage at all will be dealt.