Freeze the Waver that gets stuck in the left pit to get to the top ledge. It is possible to do this without a wall jump or any other items but it requires freezing it at a moderately precise height.

Requires:

"canTrickyUseFrozenEnemies"
"canCarefulJump"
{
  "or": [
    "HiJump",
    "canWallJump",
    "canTrickyJump",
    "canTrickySpringBallJump"
  ]
}
{
  "or": [
    "canTrickyJump",
    {
      "enemyDamage": {
        "enemy": "Waver",
        "type": "contact",
        "hits": 1
      }
    }
  ]
}