The bosses of UNDETECTED provide the greatest challenge in the game, but with the following strategies we can take control and eliminate nearly all RNG with the exception of one fight.

Before jumping into each boss encounter individually, let's look at the punching exploit that will stun lock two of the bosses: the 'Infinite Liquid' punch. Its name comes from the same exploit that is used in Metal Gear Solid speedruns. Essentially the Infinite Liquid technique is two punches sans the finishing kick combo in a specific rhythm to stun lock the enemy. If the punch - punch - kick combo is completed the boss endures iframes and will continue on with its intended mechanics/RNG. If the punch - punch rhythm is too slow the boss will do the same. At around 105 beats per minute (with plenty of wiggle room) double tapping the punch button will accomplish this:

//The Nose// - (credit to Setharooni for The Stank Strat)

Immediately grab the Stink Bombs, run around the barriers and throw a single bomb to stun the boss. Proceed to engage and perform the Infinite Liquid technique. Move towards the exit during the death animation.

//The Mind//

By far the heaviest RNG in the game, The Mind is essentially a puzzle wherein we activate four panels to open up vulnerable hit box pits to throw Blast Grenades down. Simple enough despite the hoard of bullet packing drones strewed about. These can be dealt with by melee attacks or Sponge Bullets that have a brief slow motion for a second to breathe and take your shot. Whether you decide to take the clockwise or counter-clockwise route, make sure to end up as close to the entrance/exit as possible. During the death animation you can exit the room and save time. *Note: Leaving the room too early can soft lock the game because the Reactor door will remain locked.

//The Body//

Six power generators must be destroyed by baiting The Body to launch rockets at you. This boss can really fall off the rails but with proper positioning and well timed rolls we can manipulate its movement. Counter-clockwise is the fastest route. Once The Body is vulnerable to attacks, either toss three Blast Grenades or blast it with Sponge Bullets. *Tip: To avoid taking damage from its final laser attack, try maneuvering closer before the phase change cutscene.

//The Lead//

The final boss can be a nightmare in a casual run but we make quick work of him with the Infinite Liquid technique. Simply run forward and execute five punch-punch combos, then a sixth punch-punch-kick to finish.