Sol Survivor
I’ve been badge-chasing in Survival Mode over the last few weeks, aiming for all the gold badges for lasting 20 minutes, as well as going for a few others requiring the use of a specific Commander or to kill off a certain number of enemies.
Should you upgrade your towers or not? The cost per firepower seems to suggest that a fully-upgraded tower does more damage than multiple level 1 towers, but having more towers means you can be hitting more enemies at once.
For a while I was unable to quite make it to 20 minutes, being finished off around 18 or 19 minutes in. I eventually made it on the Cwm map by going mad with level 1 towers, with plenty of railguns for their massive range.
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Tags: achievements, badges, Sol Survivor