Higher levels have more complicated fences, making the area trickier to navigate. Sarandon's role is trickier and more difficult, but Portman's will get the attention. Enemy movements and terrain were also made trickier, bringing the game's difficulty up considerably. The moment equations are a bit trickier. Finding the right form for all this incendiary talent might prove trickier. Numerical evaluation of formula 22 is a bit trickier due to the matrix exponential integral. The second, trickier part involves the footwork. Now the reverse engineering is a bit trickier. H is a bit trickier as it needs to be parameterized using a reference reaction. Ehle has a much trickier role and handles it well. You get an even trickier Firax to deal with!. The second part of the problem, the determinant, is far trickier. He has been described as an "older, fiercer, trickier Doctor". For intellectual work, productivity is much trickier. Interpreting Choice analysis is trickier than Integration.