Give him 5 blue shards to increase his armour to 1268 (tauforged 1643), giving him a base armour reduction of 80,87% (tauforged 84,56%).

This alone increase his EHP to 14.881,57 (tauforged 18.440,62).
Using eclipse damage reduction (capped at 75%) will increase the EHP to 59.526,3 (tauforged 73.762,5).

Last but not least use a Kubrow with the (full) Mecha-set, to enjoy an weak but thanks to that the armour-reduction curve flattens at ~90% also strong armour boost.
As example:
10 enemies in marking area = 101.665,45 EHP (tauforged 115.901,15 EHP)
20 enemies in marking area = 143.804,60 EHP (tauforged 158.040,08 EHP)
30 enemies in marking area = 185.943,75 EHP (tauforged 200.179,95 EHP)

This build works better when Solo, because of the nature of the mecha-set mod (allies "steal" the armour boost if they kill the marked enemy)

All calculation without the inclusion of adaption. Arcane grace hp-regeneration/s effect was added to the health pool.

A video of a full Netracellrun will follow. Till now you've to be satisfied with this way less

• Full Optimsed Netracell run (Solo): https://www.youtube.com/watch?v=Dl5IcYDhjGc
• Funny situation in a Void survival run: https://imgur.com/a/XLAfgsw
• unoptimised build: https://i.imgur.com/9qP6cho.mp4