|1||Burned Tower. You’ll need to move a boulder in the tower’s basement to reach the TM.||No|
You can find TM20 Endure inside Ecruteak City’s Burned Tower. It’s in the basement, behind a large boulder that can only be moved with Strength.
To use Strength outside of battle you need to get HM04 at Olivine City, teach it to a Pokémon, and defeat Gym Leader Whitney at Goldenrod City.
And when visiting the Burned Tower for the first time, you’ll need to fight your rival before gaining access to the basement.
How To Open the Basement of the Burned Tower
Before you can get the Endure TM, you need to gain access to the Burned Tower’s basement.
To do this, enter the Burned Tower for the first time and explore it until running into your Rival. You’ll find him by following the path left of the entrance.
This will lead you straight to your rival.
He’ll approach you when you enter their line of sight.
His first three Pokémon for this battle are:
|Haunter||20||Lick, Spite, Mean Look, Curse|
|Magnemite||18||Tackle, ThunderShock, Supersonic, SonicBoom|
|Zubat||20||Leech Life, Supersonic, Bite, Confuse Ray|
Depending on what starter you picked, he’ll also have one of these Pokémon:
|Quilava (if you got Chikorita)||22||Ember, Leer, Quick Attack, Smokescreen|
|Croconaw (if you got Cyndaquil)||22||Water Gun, Leer, Bite, Rage|
|Bayleef (if you got Totodile)||22||Razor Leaf, Growl, PoisonPowder, Reflect|
After defeating your rival in battle, a hole will open below you, and you will fall into the basement.
You’ll meet the Legendary Beasts Entei, Suicune, and Raikou there.
Note: This is also where you’ll find TM20 Endure when your Pokémon can move boulders.
Once you’re done meeting the Legendary Beasts, just find your way out through the nearby ladder.
The way up and down this ladder will remain open for future visits.
How To Move the Boulder
You may not be able to pick up TM20 Endure the first time you visit the Burned Tower.
Because you’ll first need to swing by Olivine City (west of Ecruteak) and obtain HM04 Strength from a sailor at the Olivine Café, right next to the Pokémon Center.
Talk to the sailor sitting at the center table to receive HM04 Strength.
Once you have that, you need a Pokémon in your party to learn the move. Some solid options around Olivine City include:
|Krabby||Water||Fish with Good Rod in Olivine City.|
|Miltank||Normal||Routes 38 and 39 (Morning, Day)|
|Tauros||Normal||Routes 38 and 39 (Morning, Day)|
You also need the Plain Badge given out by Gym Leader Whitney in Goldenrod Gym for your Pokémon to use Strength outside of battle, but that’s a given by this point in the game.
Getting TM20 Endure (Step-by-Step)
Step 1: Head to the Burned Tower at the northwestern corner of Ecruteak City.
Step 2: Go down to the basement through the hole in the ground immediately to the left after entering the Burned Tower.
Step 3: In the basement, go towards the right and look for a movable boulder along this path.
Follow the path until it turns northward, and you’ll find the boulder blocking the path forward.
Step 4: Use Strength to push the boulder to the far back wall.
Push it until it hits the wall to open the way toward the item on the ground.
Step 5: Pick up TM20 Endure.
TM20 Endure Details + Uses
|Endure Move Details|
|Effect||Allows you to survive a lethal blow with 1 HP for this turn.|
|PP||10 (max. 16)|
Endure allows the user to withstand an attack that would normally have depleted their health bar, leaving them at 1 HP.
Although this effect looks mostly defensive at first glance, there’s a way to use it to hit back hard after your opponent’s attack fails to bring you down.
Some moves in Pokémon Crystal become more powerful the less HP the user has. These are:
|Reversal||Fighting||20-200||Power increases as HP decreases.|
|Flail||Normal||20-200||Power increases as HP decreases.|
By surviving an enemy attack with only 1 remaining HP, you ensure that Reversal and Flail hit the hardest they possibly can.
Other moves get stronger after a powerful enemy attack, such as:
|Counter||Fighting||20-200||Deals back 2x the damage of the last successful enemy Physical attack.|
|Mirror Coat||Psychic||20-200||Deals back 2x the damage of the last successful enemy Special attack.|
Endure helps make the most of these moves by allowing an enemy to do as much damage as possible without your Pokémon fainting. Then you can hit them back twice as hard.
Another great use for Endure is stalling.
This can help you wait out field effects like Sandstorms and Blizzards or let Poison and multi-turn moves like Wrap wear your enemy down.
Note: Endure can’t be used successfully twice in a row, so you can’t stall non-stop for 10 turns before your PP runs out.
Look for these Pokémon if you want to make the most of Endure:
|Phanpy||Ground||Routes 45 and 46|
|Teddiursa||Normal||Dark Cave (Morning)|
|Gyarados||Water||Lake of Rage (Surf, Good Rod, Super Rod)|
|Machop||Fighting||Rock Tunnel, Mt Mortar (Morning, Day)|
All of these Pokémon can learn both Endure + Reversal or Flail.