Game is an intuitive first-person shooter. I can see you shoot more projectiles by picking up blue, and gain health by picking up red, and the boots give you more movement speed. Classic that there is a lock, and that you need to find the key.
Would have liked to see the enemies have a more clear attack and die animation. Now I just tried to stay away and blast them as soon as possible.
For me, the strafe buttons A and D where not doing the right thing. They move me diagonally forward while not holding W?
I died at the tower, where there are various enemies around you. Did not know what to do there. I think I went too close to the tower. But all in all it was a fun little experience :)