This game is clearly well planned, but unfortunately the endless version of it seems to be unrelentingly tedious. The budget is far too tight , mixed with the build/upgrade speed of buildings, to make defending a room unsupervised a possibility. Even with juggling all of my metal into one room I'd discover that things were still getting past my slow/laser turret combos without me there to occasionally pick off a low hp straggler. The fun of this game is far outweighed by the level of micromanaging your turrets; if it were possible for me to dump all of my metal into my own gun, it'd be a whole lot easier/less required for me to make sure I end a round while standing on the teleporter to save me that precious second or two to figure out where I need to actually go to defend. This could be made slightly less tedious by either: A) increasing the amount of metal we recieve by roughly 20%, or B) giving an extra 5 seconds between waves. An extra option that would alleviate the issue would be to remove the cooldown of turrets firing from building construction/upgrading, but that might mess with the difficulty curve a bit too much.