In a past post I propose to make a single umbrella semi civ for all the tupí-guaraní speaking tribes extended since the (atlantic) tupinamba until the (pacific) chiriguana, but it is better to focus on their respective strenghts develop in their distinct places
Atlantic side amazonas
The actual Tupi Archer are good but they need their foot shot (siege damage mode) for early harassmet and a jombya (snail horn) active ability; make a lot of noice while charging (melee)
Also, they now can gather wood (slower than a villager)
Remove the cougar pet and add this
Tamói confederation
Delivers a batch of 5 Tupi Archers for each TP you have, train your Tupí Archers % faster (age I)
Lingua geral amazónica
Reveal your enemy buildings and give your buildings a momentary huge line of sight (has a cooldown) (age II)
Poison arrow frogs
Add poison effect only to their own archers, and as long they are gathering wood, gather a smaller amount of food too (age II)
Tupi (rozado) forest burning
Has to do with the eficiency of crops instead of wood discount; give a % increase gathering in states and similar and increase the wood gather speed of your Tupi archers (age III)
Between Chaco, Pampa and Amazonas
How the TP should look
Guaraní hunter
Same model as the tupi archer but has a shield made from tree bark and tapir skin to effective cover mode, and has a boleadora (cooldown) pasive attack that slow enemy units and do extra damage to cavalry
Also can gather wood (slower than a villager)
Techs
Cuñadazgo/marriage alliance
As long as you have the TP, train villagers % faster (age I)
Tape Aviru road
Increase the movement speed of your units near the trading route and arrive your next shipment faster (age II)
Arandu Ka'avy (forestry knowledge)
a small +Hp to all units and slowly heal when near trees, also gives a smaller amount of food while the Guaraní Hunter is gathering wood (age II)
Yerba mate finders
Delivers a travois that converts to a yerba mate grove, assign villagers to gather coin fast, the Guaraní Hunter also gather a small amount of gold when gathering wood (age III)
Pacific side andean
Keremba (kyre'ỹmba)
Fast shooting archer with a strong passive arcabuz shot (cooldown) wears a poncho or jaguar skin shirt and use a saber for melee (they don’t gather resources)
Tumpa Leader
(limit 1) Archer Hero unit that has a damage boost and movement speed aura, can train jungle bowman that deals poison damage
Techs
Chicha Aguyje
Reduce the cost of keremba (and jungle bowman of the Tumpa) for each subsequent in queue (100food, 90food, 80, 70…etc) (age I)
Fearsome rituals propaganda
Reduce the damage of nearby enemy units while fighting in melee (age II)
Vassals sons
; Allow the lombard-like ability to transform food in a period of time for wood and coin, gives a pasive ability to transform enemy villagers below % HP (attacking in melee) (age III)
Bellicose culture
Can train more kerembas (and jungle bowman) in bigger batches, increase the queremba siege damage, slow their train time and reload faster their arcabuz passive shot(age III)