Any way to launch an Airstrike after you've upgraded your special? If not, then you need a way to dump quests. Stuck on 4 of 5 airstrikes and have almost upgraded everything.
Major problem with this game is the controls. You push to get moving, then jump and next thing you know you are non-stop jumping (like the keys are sticking). Or you are moving forward, let go of the keys (or even push backwards) and you sre still going forward and picking up speed. Then when you do get to stop pushing forward doesn't move you. I end up having to tap the keys repeatedly to "unstick" them. Doesn't matter if you use WASD, the Arrows, or the Number Pad. This would be an okay game if not for that. You end up with 12 + deaths that could have been avoided had the game not "thought you were jumping" or "thought you were moving forward" etc. . .
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you can switch your skill on the pre-game screen (the one with Upgrades button, missions etc.).