Run through the next archway and up the stairs.
Follow the path to a door that opens.
Kill the baddy coming out.
Collect his weapon.
Open the left door and step outside.
Kill the next baddy.
Then take a running jump onto the chain.
Turn right and climb up.
Jump onto the platform there.
Climb further up.
Then run along to the right.
Climb further up at the end.
Kill the two baddies.
Climb up the ladder.
Run to the right. On the plateau on the right you can find a weapon.
Get a few steps back and lower yourself down towards the tower.
Run around the tower and collect the medikit.
Run further along and hang from the ledge.
Drop down to land in front of a door.
Open the door and run down the stairs to find a fountain.
Run back up and get out again.
Step out onto the nearby ledge.
Take a running jump over the gap on the left to get some ammo.
On the right you can find a spot where you can use the whip.
Do so to get to the other side.
By the tower run around to the right.
Open the door and step through.
Inside you will find a switch but the handle is missing.
Run up to the top of the globe.
On a table by the telescope you can find a handle.
Pick it up.
Run back down and now use the lever.
The roof opens.
Run back up.
Look through the telescope to see Orion.
Then press the panel with Orion on it on the wall.
Collect the Vega's Manifesto inside.
Now a couple of baddies will try to open the door.
Now either:
Climb up the ladders at the telescope to reach the top. Walk along to the left and use the slide to get down.
Or:
Take on the two baddies and step out through the opened door.
Run down the stairs, unless you have taken the slide.
Kill the baddy.
Step through the door.
Run down the stairs.
Kill the next baddy and fill up your water.
Run down the last stairs as well and through the door at the bottom.
Kill the next baddy.
Run back to the beginning and through the door into the first room.
Enter through the door.

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