Could someone please help me?

For 1, try to use the hypersaw oscillators (although it sounds like it may also be square with modulated PWM). Also try adding the following scream-aids: FM, white noise and distortion.
For 2, It looks like the square is an ocave above (meaning +12 semitones) the saw, and that there is a quick rise in the pitch in the attack, the one you can get using a sawtooth LFO in env mode controlling osc pitch 1+2 negatively in a high rate. Also it seems like the sound is made a bit brittle by some tremolo or vibrato (or both), like the ones you can get from LFO3 in high rate. Come to think of it you can get a similar sound by using a low pass filter on whatever oscillator you want and then putting it through distortion.
Hope this helps somehow.