Guacamelee! Super Turbo Championship Edition

Upgrades are bought in the shop for gold earnt by killing enemies or opening the coin chests. Not all upgrades are available from the start, INTENSO only becomes available after you learn it.
This achievement should come as you play assuming you collect the chest along the playthrough and don't skip every chance to fight as gold is reasonably plentiful.

28 available Upgrades cover
6 stamina pieces (2 whole) 750->2500 forgot to check each level
6 health pieces (2 whole) 750->2500
2 health regen boosts 1250, 2500
2 stamina regen boosts 1250, 2500
2 stamina regen delay boosts 1250, 2500
Stun Boost 3000
2 Co-op respawn boosts 1000,2000
4 grapple boosts 3000 each
INTENSO health regen 4000
INTENSO shiled breaker 4000
INTENSO Charge boost 4000
Total ~50000

While not essential for the achievements, i would recommend saving for the stun boost, INTENSO shield breaker and then stamina boost/delay boosts first. Also the coop respawns ONLY effect coop so usless unless you are running through the game with a partner.