It is possible to walljump in acid without Gravity Suit.

Requires:

{
  "notable": "Reverse Acid Dive"
}
{
  "obstaclesNotCleared": [
    "A"
  ]
}
"canConsecutiveWalljump"
{
  "or": [
    {
      "and": [
        "HiJump",
        {
          "heatFrames": 280
        },
        {
          "acidFrames": 280
        }
      ]
    },
    {
      "and": [
        {
          "heatFrames": 400
        },
        {
          "acidFrames": 400
        }
      ]
    }
  ]
}

Unlocks doors:

{"types":["super"],"requires":[]}
{"types":["missiles","powerbomb"],"requires":["never"]}