KerbalX

Description

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A stock rocket called Terrier2LKO-1b. Built in the VAB in KSP version 1.3.1 with 61 of the finest parts, its root part is probeCoreOcto2.
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An entry to the Terriers to orbit challenge in the KSP forum, allowing only Terrier engines to get a kerbal to orbit. The challenge lies in the fact that this engine has a very poor ISP at sea level, making the lift-off highly inefficient.
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NOTE: this entry complied with the original objective of the challenge - since then, the OP decided to change it to be about something else.
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The solution offered here is a traditional 2-stage rocket: one booster stage with 19 Terriers in hexagonal arrangement (some clipping, nozzles kept free) that pushes an orbital stage with a single Terrier to just enough altitude and velocity where the improved ISP helps to make it to orbit.
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The orbital stage uses a fairing for cabin, and includes a tiny makeshift aerobraking solution: two elevon-4’s that in perpendicular position generate maximum drag during descent. A small chute makes the return survivable for the pilot.
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Ascent:

• EVA and board seat (zoom inside the fairing)
• SAS stabilize, throttle full
• stage to send away LES/pod
• stage for lift-off
• switch SAS to prograde at 110 m/s
• stage when empty
• throttle down to keep Ap about 1:30 ahead of the craft
• cut throttle when Ap reaches 80km
• stage to ditch the fairing at 70km
• circularize

The craft should make 80km orbit with just enough fuel left for a very shallow reentry burn (<1 unit of LFO).
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Descent:

• stage the chute
• reverse the elevon deployment
• set SAS to retrograde
• burn your remaining fuel
• enjoy the ride down

Drag/aerobraking will deorbit the craft, even if slow. The kerbal will be safe from reentry heat, and the craft will make a soft touchdown on either land or water.

Details

• Type: VAB
• Class: ship
• Part Count: 61
• Pure Stock

Mods

• Squad (stock)