Full list of all 37 Save Room - The Merchant achievements.
The base game contains 21 achievements, and there is 1 DLC pack containing 16 achievements.
Complete all levels
Complete level XXXIX
Complete level XXXVII
Complete level XXXV
Complete level XXXIII
Complete level XXXI
Complete level XXIX
Complete level XXVII
Complete level XXV
Complete level XXIII
Complete level XXI
Complete level XIX
Complete level XVII
Complete level XV
Complete level XIII
Complete level XI
Complete level IX
Complete level VII
Complete level V
Complete level III
Complete level I
Sell a treasure of every type
Beat level 40 in less than 4 minutes
Craft 1000 ammunition pieces of any kind
Spend a total of 1,000,000 ptas worth in weapon upgrades
In level 39, acquire access to the shop in less than 90 seconds
Upgrade a weapon to the max specs at once
Buy a total of 1,000,000 ptas worth in items
Perform 250 item combinations
Sell a total of 1,000,000 ptas worth in items
Bought 100 itens from the merchant
Mark and buy multiple items at once
Mark and sell multiple items at once
Examine 25 items