The Adventures of Elena Temple: Definitive Edition (UP)

Complete the dungeon without dying. (Losing all health) This is extremely easy with Rhino Armor modifier on as it makes you invincible. You won't lose any health!

Rhino Armor modifier is found in The Orb of Life dungeon. Jump out of the map at the very beginning and keep going right. In the video linked below, the run that I start to pick up the modifier starts at 2:33.

Definitive walkthrough for getting all of the achievements in the game:

Simply Complete a Level without Dying.
This is REALLY EASY If you get the "Rhino Armor". You can get this easy by using the shortcut in the "Orb of Life" Dungeon.
-When the Level starts, jump up on the ledge to the right.
-Keep going right until you drop down and see the rhino.
-Grab the Hearts/Modifier. Now we can restart and enable the Modifier.
-Next Beat a Level without Dying🏆
Full Video Guide:

You can get this achievement by following by video guide below:
However, if you wish to have a text guide, start the Orb Temple with double jump modifier enabled. Jump out of the exit above you, and go right. Wall kick off the right wall you come to (you'll need to jump and press as you jump at the wall. You'll then need to move and then press to wall-kick off of the wall to gain height. It takes a couple of moments of practice, but you'll get it.
When you're on top of the wall, move right, and then when you see spikes on the right wall, drop straight down. You'll find a rhino head coming out of the wall. Touch it to unlock the Rhino Armour modifier.

Restart the Orb Temple with Rhino Armour unlocked and activated, and you'll now be invincible.

Complete the temple to unlock this achievement with absolute ease.