At the Beginning

1. To see if there exists any possible distinction, I compared the first 2 complete ACTs of Two different mode, Director's Cut Mode and Time Challenge Mode.

1. Malignant Bug: If you kill an enemy from behind his back and then jump and get in contact with his "dead" body. Then he will be resurrected with 1 HP left. You will get an instant failure if in a infiltration mission.
2. Attention: The same terrain doesn't always be the same even if they look the same.

Branch Name

1. Time Challenge: An optional difficulty, with Time limited, based on "Director's Cut Mode".
2. Take 0 Damage: Except for the performance and illustration of Game Story, the Player Character doesn't get injured.
3. Speedrun: exactly as you commonly know it, rush through the game as fast as possible.

Bugs or Tricks I Used

1. Be noticed by an enemy and then run away or get disappeared in the enemy's sight, which will urge the enemy to turn back and go aside.
2. In addition to the item above, each sort of enemies has a different period (usually 20 frames approximately) before their finally catch sight of the Player Character.
3. It will take several frames for Searchlight Beam to locate its snipher at the Player Character.
4. Searchlight Beam has a pixel deviation, and so does enemies.
5. To grab a slightly higher platform while jumping upwards, perform a Punch (B) or Kick (r). Sometimes It may cause a delay of several frames to Grab a Cliff.
6. Most utilized solution in combat: Attack from behind the enemies.
7. I use game embedded cheat to unlock "Time Challenge Mode".
8. Rolling before an EXIT can save 1 or 2 frames, but be cautious to the distance from the EXIT and the Timing to perform a roll.

Optimization

1. Falling Position Adjustment (distribution of Key (←) & Key (→) ), to reach the farthest distance when falling downwards from a higher platform.
2. Calculate the maximum falling height, to grab the mesh, poles or ladders and then drop.
3. Perform a punch (B) or kick (r) at former 2 or 3 frames ahead of Player Character landing on the ground, in which case, the Player's able to run through behind the enemy. But more significantly, ensure that the punch or kick touches the enemy walking ahead of you but doesn't cause damage, only showing the Health Bar (HP) of the enemy. On the contrary, should the method be taken advantage of in mission of infiltration, you will fail the mission.
4. →→+B (Punch while running) 16 frames before dropping from a platform, and the Player will reach the farthest distance.
5. Add or substract the number of Key (A, Jump), to shrink the period of Player being retained in the air. The less retention time of being in the air, the more frames will be saved.
6. Velocity: running > jumping while running > moving on the mesh, a pole or a ladder.
7. I use →→↓+B/r to give the Boss a final attack to finish him.
8. (Stick) →→+B/r to knock away enimes and destroy the box that contains a key (🔑).
9. I use ←+B/r in the air when confronted with an enemy that cannot be evaded in a common way.
10. Kill more enemies at the same time as many as possible.

Details

Notes

1. r: Kick
2. B: Punch
3. l: Defence
4. A: Jump
5. ← / L: Left Arrow; Backward
6. → / R: Right Arrow; Walk
7. ↑ / U: Up Arrow
8. ↓ / D: Down Arrow; Crouch
9. →→: running (Running Direction counts as the Positive Direction, No telling left from right)

1. Jump at 2 or more frames after starting to run and the Player Character reachs the farthest.
2. Long Jump: A*7; Short Jump: A*[1,3]∩N; Middle Jump: A*4, A*5, A*6
3. Give priority to breaking the Box
4. Game complies with the principle of projectile motion; Y-X paracurve: $Y = \frac{v_y}{v_x} X - \frac{g}{2v_x^2} X^2$
5. Using Long Jump (A*7) may have a accessibility of flying over an enemy
6. Use a Knife when jumping from an edge of a Cliff →)A +14 frames), which will lead to a maximum displacement

Finally. FRAME RULE