Subnautica 2 Heat Tolerance and Angel Comb Guide

Field Notes

1. 

   Step 1RecipeGuide note

   Start from safe chemistry materials

   Prepare the simple craft gates before the dangerous route.

   Sulfur and electronics basics should be banked before heat-route exploration becomes the main objective.

   Heat preparation begins before you enter the hot area. Bank the safer chemistry and electronics materials first, then check whether the route actually requires a heat-specific craft or only a scouting pass.

   Sulfur and basic electronics are easier to solve while you are calm. Once you are inside a hot cave, every missing material becomes more expensive because oxygen and visibility are already competing for attention.

   Map hint

   Use Sulfur and relevant item pages before opening hot route searches.

   Do this

   • Sulfur route known
   • Repair or utility path checked
   • Inventory prepared for one objective

   Watch for

   • Entering hot caves to find out what recipe you need

   Sulfur

   Next: Only after safe materials are banked, search for Angel Comb-style flora notes.

2. 

   Step 2ApproximatePending review

   Use flora search conservatively

   Look for Angel Comb without overstating unreviewed exact points.

   Angel Comb-style notes should stay as flora search results until a reviewed marker exists.

   Angel Comb-style notes are best handled as search guidance until site-reviewed markers are available. That means you can use the map to decide where to look, but the article should not pretend every broad report is a confirmed pickup.

   When you enter a flora-heavy cave, scan the route as much as the plant. Note entrance shape, depth, heat pressure and whether the same path can be repeated without panic.

   Map hint

   Search Angel Comb, then keep Caves and Depth visible while exact flora points remain pending.

   Do this

   • Search term active
   • Cave entry noted
   • Exact-claim caution kept

   Watch for

   • Treating all flora clusters as the target
   • Ignoring the exit while staring at plants

   Next: Pair the flora search with cave and depth filters before going deeper.

3. 

   Step 3Biome-onlyCommunity note

   Pair the route with cave and depth filters

   Understand whether the route is hot, deep, confusing or all three.

   Heat routes often overlap cave planning. Keep the Caves tab and depth bands visible before a deep descent.

   A route can be manageable when it is only hot, only deep or only twisty. It becomes dangerous when all three stack. Before committing, check whether the target sits behind a deep band, a cave entrance, or a long return line.

   Use the map to reduce uncertainty before entering. Once inside, use in-game landmarks; the map cannot replace the moment-to-moment work of leaving the cave safely.

   Map hint

   Turn on Caves and Depth Bands. Hide dense resources unless a recipe is actively blocked.

   Do this

   • Depth band checked
   • Cave entrance identified
   • One route objective selected

   Watch for

   • Opening every layer and making the map unreadable

   Next: Do one controlled run, then return and reset before continuing the story path.

4. 

   Step 4Route noteCommunity note

   Reset after the first hot clue

   Convert the scouting result into a safer second trip.

   A good heat run returns with one new clue and enough supplies to repeat it. Do not combine a first Angel Comb search with a deep story push.

   A successful first heat run does not need to solve the whole route. If you found a clue, confirmed an entrance or learned what craft is blocking you, leave. That information is valuable only if you survive with enough clarity to use it.

   Back at base or a safe staging point, remove unrelated items, craft the missing piece and decide whether the next trip is still a heat route or has become a story route.

   Map hint

   After scouting, update the search term to the next clue rather than keeping the old broad route open.

   Do this

   • One clue or entrance confirmed
   • Supplies reset
   • Next objective narrowed

   Watch for

   • Turning a successful scout into an overextended push

   Next: Return to Tadpole Pens Code if that puzzle is the reason you entered the hot route.