Pre wall of text note: I am so sorry if this has been in some kind of suggestion before and I missed it somehow.
Anyways, here we go...

To start off, you will be fighting in a junkyard, and the levels leading up to the boss will start off in the normal clockworks, but slowly lead into the yard. It so happens that gremlins have been scrapping their leftover metals in this place and over time, it has built up. There use to be no problem with that, as the gremlins would use an incinerator to burn up the ever growing pile of junk. Except recently, something's changed. The levels of trash keep increasing, and the gremlins have abandoned the yard. But why? Scouts who have entered and came back alive have reported that something is there, attacking any living thing on sight. Mecha Knights made of scrap metal have been sighted tearing up the clockworks and adding materials to the yard. You are being sent in to find the core of the problem and to stop it.

And now I'm too lazy to design the actual levels and explain all the layouts, so I'm just gonna jump right to the boss battle, the fun part of any game :)

Larox
Type: Construct
Weak to: Elemental
Resists: Piercing
Immune to: Poison, Shock.

The arena will be made up of scraps of furniture, metal bars, barrels, old toilets, and what you would expect in any junkyard. However, here's a twist before the battle already begins! During the boss fight, movement speed is cut by 20% because you're walking in junk, not on a dirt road. You're gonna have a harder time just walkin around in something like that. There are also random poisonous pools that are on the field and walking into one will, guess what, inflict poison on you. However, good enough poison resistance allows a knight to walk over the pool without being poisoned

Larox has a giant fan for its body, a rusted cannon for its left arm, a big screw for its right arm, two heavy presses for both legs (used to crush and compress) and an AC unit or something for its head. This battle will consist of 4 phases.

In the first phase, Larox begins by firing off from its left arm an unstable junkyard cubes after locking on to a knight. It does this five times, each time choosing different knights to shoot at. If an unstable cube hits a knight, the impact will cause an explosion with extreme knockback, blasting the knight into the wall of the arena, and stunning for 5 seconds. A launched unstable cube hitting another unstable cube on the screen will also trigger an explosion with a radius of 2 squares. Unstable cubes will not be able to be detonated by knights as it is literally a cube of junk with a very explosive core. Only Larox's brute force attacks can cause it to detonate. After blasting five times, Larox will charge up its right arm, and dash toward the knight with the lowest HP, and will do an attack similar to punching the ground, except it's with its screw arm. The impact area will be a 3x3 square and if you're hit by this move below 30% HP, you will be executed, no last stand heart for you (because you know what, you're not suppose to live after having a hole punched through your body). This attack cannot be blocked, unlike Vanaduke's mace smash. Any unstable cubes in the way of the rush will explode and does not harm Larox. After the screw attack, Larox will go back to shooting unstable cubes, and this process will repeat until Larox reaches 4/5th hp. (Note that the cubes can continually stockpile and take space becoming a potential explosive threat).

In phase two, Larox will now fire off seven unstable junkyard cubes instead of five at an increased fire rate and will repeat the screw dash attack. In between attacks, Larox will occasionally summon two junkyard drillbots and two junkyard turrets. Junkyard drillbots will walk up to you with an active drill for a stomach on at all times. Bullets shot at the front of the dirllbot will be deflected and swords deal reduced damage if attacking from the front. However, bombs receive no penalty because those attack from the ground. Junkyard turrets made of scrap will shoot out shrapnel shots. Shrapnel shots will explode after being shot a certain distance and release metal scraps in 8 directions. The unstable cubes can be used to hide from the shrapnel if in the case your shield breaks from something. Larox will continue this cycle till it hits 3/5th hp.

In phase three, Larox will fire off nine junkyard cubes at an even faster fire rate (I'm going to go with .5 seconds or something) so you better keep moving or else you'll be hit hard. Nothing else changes, except that Larox gets a new move. Whenever Larox screw attacks the ground, there is a 60% chance for three junkyard pillars to rise from the ground from the impact of the screw. In the occasion that this happens, Larox will immediately begin raising one of its feet and stomp down with tremendous force after 5 seconds. The stomp creates a junk shockwave much like a tidal wave affecting the whole arena. This attack cannot be blocked and can only be avoided by hiding behind one of the 3 pillars. Any unstable cube at the moment of the stomp will explode, and the tidal wave of junk will rearrange the positions of the poison pools in the arena. This phase will continue until Larox reaches 1/5th hp.

In the final phase, Larox can now summon three drillbots and three junkyard turrets. In addition to this, it will also randomly turn on the fan in the middle of its body and attempt to vacuum in knights and drillbots alike. Any knight that ends up in front of Larox while the vacuum is still going will get punched by the screw and take a good amount of damage. Remember that you cannot shield the screw punches, so you might just be "screwed" (durr hurr terrible joke White). However, shields can resist the vacuum and you can slowly inch away from Larox while this happens.

After the battle ends, Larox will fall to its knees (if you can even call random machine parts knees), explode, or whatever, yada yada and will drop Scrapyard Medals to trade in for prizes! As for what prizes, I've ran out of creative juice to think of anything right now. So now... comments? suggestions for improvement? +1? -1? My flameshield is ready.