If you go back to the door where the main character appears in the first area, you can warp the area. Warp zone will be activated after you reach area 3 at least once.
The further you proceed, the shorter the time limit and the faster the drones appear. If you're the one who prefers to wait until the enemy comes to you, it will be harder to survive.
The leaderboard has been initialized due to gameplay changes.
Special thanks to [Sonycast](