Leave Gamet drops uncollected to prevent them from respawning. Run left-to-right to gain a shinecharge, then run left and jump (just underneath the Kamer) to the top-left ledge without needing to wall jump.

Requires:

"HiJump"
"h_runOverRespawningEnemies"
{
  "canShineCharge": {
    "usedTiles": 18,
    "openEnd": 1,
    "gentleUpTiles": 2,
    "gentleDownTiles": 4
  }
}
"canShinechargeMovementTricky"

Exit condition:

{
  "leaveShinecharged": {
    "framesRemaining": 10
  }
}

Unlocks doors:

{"types":["ammo"],"requires":[]}