onslaught (the regular version not the revenant version) gives far too little drops for the length and tedium of the activity, the only extra rewards for sitting through an entire 50 wave onslaught is a single additional weapon drop that isn't even guaranteed to be the weapon you're looking for, it would be highly appreciated if the drop rate of weapons could be increased especially in 50 wave onslaught or potentially the onslaught weapons be made craftable
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Expert farm is good tough. 2 drops per boss is fine. You can also use some potions for farm the salvation ones at the same time. Pretty effective farm i did the past week.