Numbers indicate direction of zipping. Commands are in uppercase for clarity, but need not be typed that way. Recommended DOSBox configuration: machine=tandy, core=dynamic and cycles=218042.

[Fastest] 273497 GET SUIT (if this doesn't actually take you to the suit, restart and try again until it does) 38 OPEN LOCKER [] GET ALL 4749617171717 etc. (or just navigate to door in Fast) 626249298 [sit on Enter] GET CARD 93 PUSH BUTTON 84 FAST [go northeast] 96 [fastest] 717174938 FREE (improvisation is sometimes needed here, since the non-zips earlier make Roger's position not pixel-precise) 36149 [fast] (go east) GET SPORE (east a tiny bit, press 9, Switch to Fastest) 43 [hold Enter] 93868948484939 MAIL FORM [] GET MAIL [save] 6 (wait for "Yuckk", press Enter and then immediately 3. Switch to Fast) (head east, then northeast to the gap between the swamp trees) HOLD BREATH (navigate through underwater cave. At the end, do 8 [fastest] 67 GET GEM [fast], navigate to water. GET BREATH, navigate east.) 8 [Fastest] 3939296 RIDE TREE 6 [sit on Enter] YELL [fast] F3 [wait a little] TOSS SPORE [] GET KEY [] UNLOCK DOOR [] OPEN  F3 [fastest] 249 GET ROPE 4967414 RIDE LOG [fast] (west) TIE ROPE LOG [] RIDE ROPE (get in position) SWING. (The strategy here is to jump at the western apex after the first failed grab. It is possible, but extremely risky, to very briefly switch to Fastest here to speed things up) 4 [fastest] 942 USE GEM 418 GET F3 16271 [sit on Enter] WORD 2 PUT GEM LIP 2662 [fast] (north a bit) 6 [fastest] 62624244442 [fast] (north a bit) 6 [fastest] 6 2674 [fast - quickly] (take rightmost fork) [fastest] 61 [fast] USE WHISTLE 7 [fastest] 272962929 GET ROCK 898 [save] ROCK MAN ROCK (restore and try again if man doesn't die) 6879 FILL CARD 7 [fast] (nav to above pod) GO POD [fastest] POWER L [] TURN DIAL [] ASCENT L 2 (wait until you get to Vohaul's asteroid) 6 [fast] (navigate) [fastest] FIVE 1 (repeat 39 until at button) PUSH BUTTON [fast] (navigate) [fastest] GET CAN [] GET SUIT [] GET LIGHTER 27418 FOUR (save) 2 (repeat 93 until at door) [fast] PUSH BUTTON (navigate) 8 [fastest] 49429 OPEN DOOR [] GET PAPER 19493 (save) 2939393939.. (to button) [fast] (navigate) PUSH BUTTON (navigate) 8 [fastest] GET CUTTER (save) 29638 THREE (save) 272717171... PUSH BUTTON [fast] (nav) 8 [fastest] GET PLUNGER (save) 29638 ONE [fast] (navigate) [do "PUT PAPER CAN", prepare "TIE PLUNGE"] (nav below pod) 2 [fastest] 6 [fast] (navigate west, wait until the acid is a couple ticks past the halfway mark) TIE PLUNGE [fastest] RIDE STOW CAN [] GL[F3] 6 [sit Enter] 292 [fast] (nav) 8 [fastest] [sit Enter] CUT PIT [fast] (nav) 4 [fastest] GO VENT (4)84 HIT BUTTON 626 [fast] EXIT (nav west) PULL LEVER [] TYPE ENLARGE (nav back, get enlarged, nav to monitor) LOOK SCREEN [] SHSR (nav) GET  MASK [] WEAR F3 [fastest] 66162 171717.... (to near the western edge of the screen with red stripes) [fast (or Normal for awkward typists. Consider saving here)] (nav to button, preparing PUSH BUTTON en route) PUSH BUTTON (walk east) GO POD [fastest] LAUNCH (wait) LOOK 929 OPEN ROOM [] GO  F3

Alternative approaches:

• using the rube to deal with the terror beast; i.e. 6 [fast] USE WHISTLE [] TOSS RUBE [fastest] 71898 (picking up the rock along the way). This is used in the 100% route. The rube toss must be timed accurately
• briefly using Fastest before "pull lever" and "look screen" for walking west and north (respectively) while miniaturized, and (for a smaller time gain) also after "type enlarge". These zips need to be cancelled immediately to keep the clone timer from running out, making this approach extremely risky
• using Fastest more during the plunger sequence. This is also extremely risky, but saves over 10 seconds