So first and foremost the final two armor sets are game-breaking I understand wanting to reward players for putting in the ridiculous effort of making them. However my joy of finally crafting the set was quickly replaced with the shattering boredom of being invincible. The armor stat is a percentage based damage reduction, so 100 and above completely negates damage. I enjoy being rewarded for hard work but damage immunity removes the challenge and therefore the fun. I think the armor should cap at 90 or 95 instead, still significantly better than the vanillas but not immune to damage entirely.

The gas pump buys items at 100% value as opposed to the default of 20%. To be fair I enjoy better prices but 5x better is a lot too much.

The other is the entrance to the bottom floor in the starter room for some reason gets blocked once you've upgraded to the final tier.

This race feels more akin to a cheat mod instead of a race mod due to how overpowering it's features are.