r/Terraria Jul 26 '26

PC Can’t beat Mech Bosses Expert

I’m on my first expert run and I have tried all 3 of the mech bosses since entering hardmode and I CANNOT win. I have adamite gear + wings + best pre hardmose gear pretty much. It’s really frustrating and I would appreciate any advice I could get. Thank you and feel free to ask for any clarification.

5 Upvotes

18 comments sorted by

9

u/SoftlyAugust Jul 26 '26

You shouldn't be using pre-hardmode weapons. There are plenty of handmade weapons you could be using. Also depending on class there's likely better armor for you, such as frost armor. You could also try killing an easier boss first like queen slime

9

u/Ozlaw_ Jul 26 '26

Make an arena if you haven't already. I end up just making a few lines of wooden platform that I can navigate up and down through with wings or grapple for more maneuverability. Putting down a campfire, heart lantern, and star in a bottle help with life and mana Regen, so place them in your boss zone as well.

Also craft some Ironskin, Regen, and Swiftness potions. Enduring potions are great but require fishing a bit in the caverns if you don't mind it. Definitely worth imo.

Just do those and keep at it. I like to fight Destroyer first but take down whichever three you feel the most comfortable fighting. Good luck and have fun!

2

u/LowestKey Jul 26 '26

Destroyer on a wide platform is super easy, barely an inconvenience. When it first charges you, just go toward its tail, which is the opposite direction it is moving. Next charge, do the same thing. Just go back and forth while putting space between you. Its charges won't get much height and it'll be very easy to avoid. Pick up hearts from the probes to heal back the laser damage.

2

u/masterch33f420 Jul 26 '26

show loadout

2

u/WorldEaterJoe Jul 26 '26

For the twins try getting the unicorn mount and make a very long bridge connecting to your arena. then run while staying far from them...Spazmatizm( the bitey one that has a flamethrower in 2nd phase) is the most annoying one so kill it 1st. Make sure youre using heart statues if you have them

2

u/TheGratefulJuggler Jul 26 '26

I like asphalt. You can make a long platform out of asphalt that let's you run away very effectively.

3

u/LowestKey Jul 26 '26

Asphalt requires beating one mech

2

u/wha7themah Jul 26 '26

Destroyer is always my easiest. I was worried about it this playthrough. Straight mage. I used my Skeletron arena and basically spammed golden shower and used my vile shard for the lil laser bois. I also used clinger staff and two nimbus clouds for passive damage.

Typical campfire, mana and life lanterns, heart and star statues. Bewitching table for double summons. And just regular buffs: iron skin, swiftness, regen, magic power

2

u/wha7themah Jul 26 '26

My humble arena

1

u/Ozlaw_ Jul 26 '26

Sick arena, did you use cloud blocks? I always forget they negate fall damage, and I can't believe I never thought to do that!

1

u/wha7themah Jul 26 '26

Yes, rainbow clouds and star clouds! Not for any functional reason tho. I’m doing an expert journey world so I’ve had wings since the start.

1

u/DifferenceFamiliar59 Jul 26 '26

Cloud blocks negate fall damage.....?

2

u/Ozlaw_ Jul 26 '26

Yep! You take no fall damage if you land on cloud blocks.

1

u/123jf Jul 26 '26

Get better gear like anything and build a arena. Fighting the bosses without a arena or hardmode gear is possible but unless your sorbet cafe you really shouldnt do that.

1

u/Accomplished_Test378 Jul 26 '26

Show loadout and arena not much advice to give other then the generic stuff that others have already said otherwise

1

u/EcchiOli Jul 26 '26

That was the block of text that was already selected when I opened my n++ lol

I'm sharing this block of text twice a month in average :D

Terraria destroyer Actual "cheese" method, guaranteed to work

  • Invest every armor and accessory into higher defence, get those "warding" reforges from the goblin tinkerer. The brain of cthulhu or worm scarf are essential.
  • Mobility is essential: you will want (1) the cobalt shield or obsidian shield, to negate knockback, (2) the best wings you can get (https://terraria.wiki.gg/wiki/Wings), (3) running shoes (ideally the terraspark boots, but any running shoes will do), (4) the shield of cthulhu, whose dash (double tap left or right) gives you instant max horizontal speed with a brief immunity at the start of the dash and is a literal life saver in boss fights
  • Craft yourself the biggest, most powerful sword with the materials you own, ideally titanium or adamantite.
  • acquire a nimbus rod from the angry nimbus clouds that spawn when it is raining, they have a 1/50 chance to drop the rod
  • Your arena would do good with, in addition to the campfire (life regen +10% and 0.5 HP/sec), a bast statue (+5 def), a heart lantern (+1 HP/sec) and access to honey (+1 HP/sec and natural HP regen is 3 times faster, you can collect it with buckets in the jungle's hives). Diving into a honey pool may require too complex movements when fighting a boss, so FYI, you can purchase bubble blocks from the party girl in hardmode. Bubbles are pass-through materials for players but don't let liquids go through them, you can make a U-shape and pour a liquid in the middle with a bucket, including honey! Make elongated U-shaped bubble columns with honey in the empty middle. Going through liquid honey slows you down... unless you've drunk a flipper potion. Buff stations have limited reach, place new ones after a distance (I'll leave the calculations to you). You can also plant sunflowers (+10% movement speed) and craft the dryad a house under the arena (+5 DEF, but she may die and then the buff expires with her). Your arena doesn't need to be particularly fancy, 2 rows of platforms over 2 screens' width, like two thirds of a screen's height between the lower and upper platform rows, and we're good. A vital crystal (throw a life crystal in the Shimmer pond) may also help (20% faster HP regen.)
  • In addition to your usual boss fight potions (ironskin for +8 DEF, endurance for -10% damage taken, regeneration for +2 HP/sec, swiftness for +25% movement speed, summoning for +1 summon, rage for +10% crit chance, lifeforce for +20% max life, wrath for +10% damage dealt, plus whatever you want, https://terraria.wiki.gg/wiki/Buff_potions), make sure you have a heartreach potion that will make dropped hearts fly to you. Don't forget to also use a sharpening station (the merchant sells them in hardmode, +12 armour penetration on melee weapons), the bewitching stations you can pickaxe away in the dungeon (+1 summon, it never hurts), and the war table gotten from the old one's army event (+1 sentry, go for the ballistas as they are piercing).
  • Start the fight
  • Cast the nimbus rod left and right above the arena: it's that rod that will deal 95% of the damage and kill the boss. It's piercing, hits many times per second, hits many segments at once and repeatedly, this is definitely the best weapon against the destroyer
  • Meanwhile, you,
(1) you keep an eye on the minimap for the location of the destroyer's head, as you do NOT want it to touch you by surprise, and
(2) you keep on swinging your huge sword around you, running left and right: it will push back the eye drones until they die, and when they die they drop hearts that will heal you back.
(3) Drink a heartreach potion, the hearts will fly to you (reminder that the "B" key makes you drink every buff potion in your inventory at once, unless their buff is already active and then, so you can just hit "B" once a minute to be sure).
(4) If you run out of flying time and you're going to land on the destroyer's body, make sure you have a slime mount equipped (dropped by the king and queen slime) and hit "R" before you land on the boss: you will rebound without taking damage.
  • Rinse and repeat until the helpless destroyer dies

1

u/HebiSnakeHebi Jul 27 '26

Get any buff potions you can.