L'Arsene help pleas

[Manzanita]

I can't get out of the second trap L'Arsene set for Garrett. The one where you fall down a hole to where The Admiral and the spiders wait. Can anyone help please? I've done everything except catch L'Arsene himself.

[Nightwalker]

That's a tough one to spot. There's a VERY hard to see button on the wall above the spot where the spiders are. You need to hit it with a broadhead and it's easiest to do from up on the ledge. You'll probably have to zoom in on it to see it clearly.

[Manzanita]

Thank you!
Now how do I finish TTGM: Making Tracks?
:)
I've got the tri water key from I Jones (and a water key) but neither work on that metal plate. No need to tell me exactly, just a hint of where to look next would be great ta. Or tell me if I've got a bug in my game instead...

[Nightwalker]

The TriWaterKey should work on the pedestal by the gate at the end of the sloping street in the Old Miner's Village. By time you've gotten this, you're all but done the mission. You should have already been in the Apex room, placed the Stars, etc. I've never heard of a bug affecting this part but if that's the case, just use "ctrl+alt+shift+end" to finish the mission if you want to see the stats screen.