Thresher

Thresher is a Single Player and Multiplayer level. There is no in-game name for this level, the name comes from documentation included with the file.

The documentation for this level appears to have been taken from Entering Basin, there is a link to THRED when Quest was used to design the level, and the author line incorrectly states that this level was made by Jim Lowell.

Walkthrough
Turn left from the start, then head underneath the ramp to collect the Rocket Launcher. Turn right, then cross the room, ignoring a column with a shallow pool of Water beside it that is useless. Collect the Rockets in the upper left corner, then turn right once more. Cross the length of the room, passing a ramp that heads up to your right, to collect the Rockets in the corner. Turn right, then head underneath the ramp you just passed to collect the Grenade Launcher. Continue diagonally to the middle of the room, to a pillar of Water, then look up to kill 4 Rotfish. Return to the Grenade Launcher ramp and head up it, collecting the Rockets at the halfway point. Turn right at the top to kill a Grunt, then turn around to kill another Grunt to your left. Head to the wall, then turn left to collect the Nails. Continue forward, passing by the Water separating the room in half, and ignore the ramp heading upwards to your left. Collect the Shells in the far corner, then turn left. Proceed forward while killing a Grunt on the section you are on, then kill the Grunt to your left. Ignore the pathways to your left, they just lead back to the opposite side, and instead continue until you reach a ramp on your left. Head down the ramp to collect the two 25 Health, then return back up it and turn left. Move forward to the wall, then turn left once more, passing once more through the separation of Water. Momentarily ignore the ramp to your left, instead continuing forward to collect the Nailgun. To your left is where the pathways you ignored earlier would have taken you, as well as the original ramp you used to reach this floor.

Head up the most recent ramp you previously ignored while collecting the two 25 Health. Turn right at the top to collect the Shells, then turn right once more to kill the Knight to your left. Turn right, then head down the platform while killing another Knight. Turn left at the wall, then ignore the ramp to your left, continuing forward through another Water separator. Kill the Enforcer on the opposite side, then kill the Enforcer to your left. Head to the wall before turning left, then continue forward while ignoring the ramp leading back down to your left. Collect the Double-Barrelled Shotgun in the corner, then turn left. Move forward slightly, then turn left once more to head up another ramp while collecting the 25 Health and Rockets. Turn right, heading to the far corner of the room while ignoring the empty pathways to your right. Collect the Super Nailgun in the corner, then turn right and head through the Water separator. Kill the Fiend on the opposite side, then continue forward while collecting the Nails. Turn right at the corner, then move forward before turning right once more to begin heading down another ramp. Collect the Shells and Nails, then turn around and return to the top. Turn right, then head to the wall while ignoring the opposite side of the empty pathways to your right. Turn right once more, then move forward to collect the Nailgun while killing the Zombie. Straight ahead is the opposite side of the Water separator and the ramp you used to initially access this floor.

Spawn Locations

 * Middle of the lowest floor, Rocket Launcher side.
 * Middle of the lowest floor, Grenade Launcher side. (corrupt)