Solution

The large grid is an altered version of S.E.T.. For one of the rules in S.E.T., you need to refer to a 3×3 grid. 9 of the images have different lines showing how the grid should be formed, seen below.

The flavor text indicates that two different solutions can be found in the grid.

After filling the smaller grid with each clue's solution, marking the letters with the corresponding symbols in the larger grid spells the solution.

C	A	P	E
O	M	A	R
T	I	T	O
F	A	L	L

PORTAL