Bring Me a Plushy

Talk to Space Stalker to start this quest. Find the enemies marked in the map and eliminate them all. Once done, you have to explore another hideout. (Alien Factory)

The main door is locked so you have to find the levers in the available paths. You'll also encounter rooms with floor panels in the corners where you have to step on at least two combinations to lower the spikes in the doorways.

In one of the paths, there's a chest in the dead-end. Clear the enemies to loot it. Backtrack to the floor panel area and open the other path to reach the lever. Now return to the locked main door to continue to the other path.

While exploring, you'll come across what seems to be a new type of obstacle room. To start, you have to press the button to turn all tiles to red. Now you have to carefully choose which tile to step on. Stepping on the wrong tile will reset the whole room and lock you out. You have to press the button again to restart. Since I don't know if the correct tiles are randomly generated, you have to be patient and do trial-and-error. Find the lever in this area to unlock the door and a flying chest as well.

Enter the newly unlocked door and go to the next area. Space Stalker's plushy is located in the middle of the room, surrounded by spikes. Defeat all enemies to lower the spikes and grab the plushy. Access the computer to complete the hideout. Talk to Space Stalker to complete the quest.